How pregnancy can be determined using a thermometer. How to measure basal temperature to determine pregnancy. Possible Basal Body Temperature Measurements

Long-term observations of doctors convincingly prove that the more a woman is informed about her reproductive system, the more prosperous her female life is. For many women, the question is especially relevant: how to determine early pregnancy? In order not to fall into the trap of pseudoscientific recommendations, you need to know how conception occurs and what methods of determining pregnancy can give a reliable result.

How is conception

The male body produces over 200 million sperm. Sperm, once in the female body, pass through the cervix into the uterus and rise into the fallopian tubes. The woman's ovum, which leaves the ovary, is captured by the finger-like ends of the fallopian tube and begins to move along it. About one third of the length of the fallopian tube, the egg meets the sperm and fertilization occurs. Sperm cells surround the egg and one of them manages to penetrate into its outer layer. At this moment, conception occurs, after which other spermatozoa can no longer penetrate the egg.

After conception, the chromosomes of the sperm and the egg fuse with each other and the fertilized egg becomes one. Then it begins to divide into two, four, eight cells, and finally a whole cluster of them is formed. This collection of cells continues to move through the fallopian tube into the uterus. After entering the uterus, the accumulation of cells is there in "free swimming" for several days, and then implanted in the wall of the uterus, the mucous membrane of which is already ready for this thanks to the hormone progesterone produced by the ovaries. After implantation, the accumulation of cells is divided into two layers: one of them becomes the embryo, and the other becomes the placenta. The developing placenta produces a hormone called human chorionic gonadotropin (HCG or hCG). By the presence of a certain amount of hCG hormone in a woman's body, you can identify early pregnancy.

The onset of pregnancy in a woman is strictly tied to her menstrual cycle. Conception can occur only after the mature egg is released from the ovary into the fallopian tube. This happens around the 14th day of the cycle, with a cycle of 28 days. By the time of ovulation, a number of changes occur in the female body: the mucous membrane of the uterine wall is preparing to accept the ovum, the hormone progesterone is produced, without which the implantation of the ovum into the uterus and the preservation of pregnancy is impossible, the basal temperature (temperature inside the body) increases to 37 degrees favorable for conception.

If conception does not occur, then the basal temperature drops, the mucous membrane of the uterus (endometrium), which never had a chance to receive the ovum, exfoliates and is excreted from the woman's body along with menstrual flow.

Video on how conception occurs

How to determine pregnancy: medical diagnostic methods

Given the mechanism of conception, it is possible to determine early pregnancy only after the ovum is implanted into the wall of the uterus and the hCG hormone is actively produced. This hormone from the placenta enters the blood of the pregnant woman, and from there it enters the kidneys and then into the urine. It is by the presence or absence of the hCG hormone in the blood or urine that early pregnancy is determined in medical practice.

It is absolutely possible to accurately determine early pregnancy by donating blood for analysis on the seventh to tenth day after the intended conception. By this time, the ovum has already been implanted into the wall of the uterus and the hCG hormone began to actively enter the bloodstream, which is determined during the analysis. Previously, it was not possible to determine pregnancy in any way, since the body still does not give any signals about its occurrence. Yes, it, in fact, has not yet come, because we can talk about the onset of pregnancy only after the ovum is fixed in the uterus and the placenta has formed.

Pregnancy tests also measure the amount of the hCG hormone, but only in a woman's urine. Modern tests are so sensitive that they are more than 95% accurate.

Tests allow you to determine pregnancy from the first day of your missed period. In order to get a reliable result, it is better to test the first morning urine, strictly following the instructions attached to the test. For greater confidence in the test results, two tests are done with a break between them in 1-2 days.

How to identify early pregnancy

There are three ways to determine early pregnancy: by a blood test for the hCG hormone, using a pregnancy test and by measuring basal temperature.

The most reliable way to detect pregnancy in the early stages - this is to donate blood in an antenatal clinic for the content of hCG hormones approximately on the tenth day after the intended conception, that is, somewhere on the 24th day with a cycle of 28 days.

Determine early pregnancy can also be done using a highly sensitive test. He will show the presence of pregnancy even 2-3 days before the expected menstruation. Now on sale there are also tests that show not only the presence or absence of pregnancy, but also the period starting from one week.

Determination of pregnancy by basal temperature


Another way to determine early pregnancy is to measure basal temperature daily. Basal temperature is the temperature inside a woman's body. It can be measured in the mouth, rectum, or vagina. It is possible to determine pregnancy in the early stages by measuring the basal temperature quite accurately, but this method has a significant drawback: to obtain reliable results, the basal temperature must be measured and recorded daily for three months before the intended conception.

In order to determine early pregnancy by basal temperature, it should be measured every morning for three months. Thus, the time of ovulation is calculated. On the day of ovulation, the basal temperature, which before that was 36.4-36.8 ° C, rises to 37.2-37.5 ° C. The temperature stays at these levels for more than a week and drops several days before the expected menstruation. The absence of a decrease in basal temperature 2-3 days before the onset of menstruation is an accurate sign that pregnancy has occurred.

Determination of pregnancy by basal temperature can be used as an auxiliary diagnostic method and without preliminary schedules. After the onset of ovulation, a woman's basal temperature always rises to above 37 ° C, and after about 7-10 days it returns to normal. That is, 3-4 days before the onset of menstruation, the basal temperature should already be normal if the woman is not pregnant. If pregnancy has come, then the basal temperature does not drop, but continues to stay at the level of 37.2-37.5 ° C degrees. So, if there is a delay in menstruation, and the basal temperature is increased, then the likelihood of pregnancy is very high.

Using the method of measuring basal temperature, you need to keep in mind that its increase and stable preservation at around 37-37.5 ° C may be associated not only with the onset of pregnancy, but also with other factors.

How to determine pregnancy at home without a test

If for some reason it is not possible to do a test or be examined by a doctor, and you need to determine pregnancy in the early stages, then the best thing is to start measuring your basal temperature. The accuracy of the method can be quite high even if the woman has not kept the temperature schedule for several months. If there are fears that pregnancy has come, you need to start measuring the basal temperature and monitor what happens to her 3-4 days before the expected menstruation. If the temperature has not dropped, and besides, there is also a delay - then these are fairly accurate signs that a woman is pregnant.

When using the basal temperature measurement method in order to determine early pregnancy, it is important to follow a number of rules:

The temperature should be measured after a few hours of sleep, preferably in the morning without getting out of bed;
to measure the temperature, you should use the same thermometer all the time;
the most accurate results can be obtained by measuring the rectal temperature (in the rectum);
with the use of sedatives, oral hormonal contraceptives and alcohol abuse, the data obtained may not be informative.

Determining pregnancy without a test at home

In addition to basal body temperature measurement, you can start listening to your feelings. So, in many women, the onset of pregnancy is accompanied by the so-called implantation bleeding. Implantation bleeding is a small bloody discharge that occurs when thin blood vessels are damaged during implantation of fetal cell clusters into the uterine wall. Implantation bleeding is one-time, it is not profuse and is observed a few days after the alleged conception.

About the onset of pregnancy and without a test we can say almost for sure, if symptoms such as:
increased fatigue;
pain in the lumbar region;
change in appetite and taste preferences;
swelling and increased sensitivity of the mammary glands;
restless sleep.

In different sources, you can also find all sorts of folk ways of how to determine early pregnancy. Most of them do not have any scientific justification and are akin to fortune telling on coffee grounds.

Definition of pregnancy with soda

The only way that has at least some explanation is the definition of pregnancy using soda. The essence of the method is that a teaspoon of soda is poured into a container with the first morning urine. There is no pregnancy if the combination of soda and urine begins to fizzle and foam, but if the soda calmly precipitates, the woman is in an interesting position. The method is based on the assumption that the urine of a pregnant woman, due to the presence of hormones in it, has a higher alkaline pH, so the soda does not fizzle, but behaves calmly and precipitates. When carrying out such a test, it should be borne in mind that a high alkali content in urine is also observed if a woman has urinary tract infections, with renal failure, prolonged diarrhea or with prolonged vegetarianism.

Instructions

Get a thermometer to measure basal temperature. It can be mercury or electronic. If you are going to use an electronic thermometer, then compare its readings with a mercury one and take into account the available one for further manipulations. It is important to always use the same thermometer.

In the morning, without changing position, take a thermometer and measure the temperature in the vagina or rectum. You can also measure the temperature in the mouth, but then the basal temperature values ​​will not be higher. Use only one temperature measurement method to avoid inaccurate results. Take the temperature measurement within 5 minutes.

After that, write down the temperature readings in a specially designated notebook or calendar. You can also compose the basal temperature, in which you will mark the date on the abscissa and the basal temperature on the ordinate.

Repeat the above steps throughout the cycle, and then it will not be difficult to determine the offensive. The fact is that the cycle is divided into two phases - the phase preceding, and the phase of the corpus luteum. In the first part of the cycle, the basal temperature is kept at about 37 ° C. During ovulation, a jump in temperature occurs, and its value will be about 37.2-37.3 ° C. Before the next menstruation, the basal temperature is again up to 37 ° C. The corpus luteum phase is almost always around 14 days, while it can vary before ovulation. Thus, if you find that the basal temperature remains high for more than 17 days in a row, it is already possible about the probable pregnancy.

note

Despite the popularity of this method for determining pregnancy, it cannot be considered absolutely reliable. Its effectiveness can be influenced by hormonal disruptions in the body. In any case, you should consult your doctor for a definitive diagnosis of pregnancy.

Sources:

  • how to measure temperature during pregnancy

Tip 2: How to find out about pregnancy by measuring basal temperature

To measure basal temperature, a method called "fertile phase by basal temperature change" is used. This method is explained by the fact that different phases of the menstrual cycle have different temperature fluctuations. This suggests that in these very different phases of the cycle, different levels of hormones are determined, which show the temperature.

You will need

  • Thermometer.

Instructions

During the menstrual cycle, a woman's temperature is always elevated (37.0 and higher). During the first phase of the cycle (follicular) until ovulation, the temperature is low, approximately 37.0 - 37.5 degrees.

Before the period of ovulation, the temperature decreases, and after ovulation it immediately rises by 0.5 degrees (about 37.6 - 38.). Such an increased temperature lasts until the next menstruation. If a woman, then there will be no menstruation, and the fever will persist throughout.

The temperature should be measured every morning at the same time without getting out of bed and immediately recorded. It is also recommended that you continue to measure and record your readings during your menstrual period.

You should also measure your temperature after at least three hours of uninterrupted sleep.

It is imperative to note all the side factors (stress, moving, sex, etc.). This will later make it possible, when decoding, to understand why there were deviations in the temperature graph.

It is necessary to record the thermometer immediately, so as not to forget about them later.

It should be noted that for an accurate schedule, it is necessary at least to conduct observations.

If the first phase of menstruation is unstable and may fluctuate, then the phase of the corpus luteum is very stable and is approximately 12-14 days. It is very important to follow the second phase, not the entire cycle.

Usually, the graph is divided into two phases: first - the phase of low temperatures, and then, immediately after ovulation, it rises sharply, and the phase of the corpus luteum (high temperatures). If, after the second phase, an additional upward temperature jump (sometimes gradual) appears, the graph becomes three-phase and the likelihood of pregnancy is high.

Related Videos

note

Avoid intercourse on fertile days or use additional contraception.

Helpful advice

In order to determine pregnancy by measuring basal temperatures, it is necessary to closely monitor the schedule of the menstrual cycle and regularly keep a graph of temperatures.

Sources:

  • how to measure your pregnancy temperature

Modern women can easily determine if they are pregnant. The methods they use provide a very high percentage of reliable information even at the earliest possible date. And how was pregnancy determined earlier, when modern diagnostic methods were not yet used?

How pregnancy was previously determined

There are many popular ways to determine pregnancy. Some of them do not have any scientific justification, while others, on the contrary, are relevant in our time. Pregnancy is associated with biological changes in a woman's body, which were noticed by midwives in ancient times.

A pregnant woman changes hormones, behavior, addictions, and over time, the body.

The most striking sign of pregnancy is a delay in menstruation. However, some women are able to find out about their new condition even before the date of their occurrence. This is due to the fact that there are very sensitive ladies who begin to feel changes in the body already about a week after the possible process of conception.

The fact of the appearance of pain in the chest may indicate pregnancy. The nipples can become hypersensitive and painful to touch.

Pregnant women may begin to experience fatigue, drowsiness. Some even experience early toxicosis.

Women are especially sensitive to smells.

Some midwives used to use boiling urine to determine pregnancy. If a sediment appeared in her, it was believed that the woman was in position.

Historical facts

There are many historical facts regarding the definition of pregnancy in ancient times.

In Sumer, pregnancy was determined using a tampon made of linen, woolen thread or grass. A woman had to wear such a tampon for three days. If he transfused after extraction, this meant pregnancy.

In ancient Egypt, pregnancy was detected using an unusual drink, which was prepared on the basis of milk.

Quite a few girls are concerned about the question of how to understand whether a pregnancy has come when there is no test at hand? If you ask any gynecologist, you will get the same answer - no way. At home, you cannot get a 100% accurate result. The result may be only likely signs and symptoms. Therefore, we can only in theory tell you how to determine pregnancy without a test.

Symptoms and Signs


You can talk about probable pregnancy if you have some or all of these signs:

  1. Delay of menstruation. A completely indirect sign, because this can happen even for those girls who definitely cannot be pregnant. The timing of the onset or non-onset of menstruation is influenced by a large number of all sorts of factors: stress, climate change, and so on. Even doctors can tell if you are pregnant only after at least 2-3 weeks have passed from the delay. This cannot be done at an earlier date.
  2. Toxicosis (nausea and vomiting). These two signs can be called the most common, but again, not the most correct, because it is often possible to meet a woman who did not suffer from such a phenomenon at all.
  3. Chest pain. It should be noted right away that this symptom is characteristic only for those girls who have never suffered from pain in the mammary glands. It so happens that even touching the chest area hurts. If the breast has also increased in size, we can talk about a possible pregnancy.
  4. Pain in the area of ​​the ovaries and uterus. Pain in pregnant women should be similar to that experienced by girls during menstruation. Again, if the stomach hurts, this may also indicate a host of various reasons, ranging from the early onset of menstruation and ending with various pathologies of the uterus and ovaries.
  5. An increase in the number of secretions. Usually this symptom can be observed during ovulation. The discharge should be clear and odorless. If you notice a whitish hue and an unpleasant odor, you most likely have thrush. It is worth noting that this problem quite often accompanies pregnancy.
  6. Decreased or increased libido. Any pregnant woman can observe a jump in libido in one direction: positive or negative. This is due to the fact that hormonal changes occur in the body. Husbands of girls in no way should worry that their beloved has lost her former feelings, this is not at all the case. It's just that she, without knowing it, is preparing to become a mother.
  7. Drowsiness, irritability, tearfulness and other "female" emotions. Also, pay attention to whether you have any strange desires. For example, you woke up in the middle of the night and realized that you would simply die without salted fish or pineapples. You need to understand that in fairly frequent situations, such desires are not a simple whim, they are a signal that a restructuring is taking place in your body.
  8. More frequent urge to use the toilet. If you understand that you drink quite a bit of water, but you literally want to go to the toilet all the time, you may suspect pregnancy. But only to suspect. After all, such a symptom is also characteristic of a disease called cystitis, for example. But with it, the stomach usually hurts and pain is felt when urinating. If this is not the case, you can think about future motherhood.

Determination using a thermometer



Now you will learn how to measure basal temperature and understand what its various indicators mean.

Note! This method is most often used not to determine whether there is a pregnancy or not, but in order to understand when it is most likely to occur.

How to determine pregnancy by temperature? You should start your tests no earlier than two days before your period should start. The cycle is divided into 2 phases - before and after ovulation. They are practically equal in duration. It is precisely in the second phase, if pregnancy occurs, the temperature rises (up to 37 degrees) and lasts for some time.

Basal temperature can be measured in the rectum, vagina or mouth. Hold the thermometer for 3 minutes. If you put a thermometer to measure the temperature under your armpit, nothing will work.

Remember, however, that the correctness of such measurements is significantly influenced by illness, stress, and some medications. In general, the accuracy of the method is rather low. If you understand that there is none of the above, you can consider an increased basal temperature for some time as a sign of pregnancy. Such a symptom can be especially accurate in combination with all or some of the other symptoms that we have already mentioned.

Please note that you need to measure basal temperature in the morning, before you get out of bed. Moreover, you can not make any sudden movements at all, even shake off the thermometer in the evening.

In general, of course, if you think that you are pregnant, the best option is not to guess about it, but to ask your gynecologist for an exact answer.

A thermometer is an indispensable tool for monitoring the health of the body and the condition of a woman. With its help, you can not only measure body temperature, but also protect yourself, plan and determine pregnancy. True, for this it will be necessary to monitor the basal temperature for several months.

For what you have to prepare:

  • pen or pencil
  • a piece of paper or notebook
  • thermometer, mercury or electronic

Basal temperature is measured in the vagina or rectum. For a more accurate result, a thermometer, mercury or electronic, should be kept at the measurement site for about five minutes

Temperature measurement

The principle of determining pregnancy is based on physiological changes in the female body. Basal temperature shows whether ovulation has occurred or not. For example, usually in the first half of the cycle (depending on the duration of the cycle, it can be from 4-5 days to 10-12 or more), the basal temperature is kept below 37 degrees. During the period of maturation of the egg - a favorable time for conception - it rises to 37.2-3.4 degrees. And then it gradually decreases. Pregnancy is unlikely at this time.

Determine pregnancy without a test

  • More details

So, the main points of the action of temperature changes in the body have been clarified. Now, from theory to practice, that is, to direct measurement. To do this, prepare a thermometer and place it next to you. In the morning, waking up without getting out of bed, put a thermometer and measure your body temperature for five minutes. Write down the data in a special notebook, indicating the temperature and date of measurement. Repeat the procedure the next day. And so on for several weeks.

If you closely monitor your body temperature and check it daily, you can find out as accurately as possible what is happening in your body.

What the thermometer will say

Now you have to remember the mathematics course and draw a graph where you need to put points with the date on the abscissa axis, and the temperature value on the ordinate axis. Mark the points corresponding to the date and temperature values ​​and connect them by drawing a graph. If the graph shows a jump in temperature for several days, after which it drops to 37 degrees, everything is normal. If the basal temperature above 37 degrees lasts more than 17 days, we can talk about a possible pregnancy. However, despite the availability and simplicity of this method, you cannot fully rely on it.

There are many ways to determine the onset of pregnancy, some of them are considered reliable - a pharmacy pregnancy test, blood test or ultrasound. But it is not always possible to use them, and it is important to find out about pregnancy as early as possible. You can determine pregnancy with a thermometer by measuring your basal body temperature.

There are many ways to determine the onset of pregnancy, some of them are considered reliable - a pharmacy pregnancy test, blood test or ultrasound. But it is not always possible to use them, and it is important to find out about pregnancy as early as possible. Determine pregnancy with a thermometer can be done by measuring basal body temperature. Get a thermometer to measure basal temperature. It can be mercury or electronic. If you are going to use an electronic thermometer, then compare its readings with a mercury thermometer and take into account the existing error for further manipulations. It is important to always use the same thermometer. Before going to bed, place a prepared thermometer near your bed so that you can easily get it out in the morning. In the morning, without changing position, take a thermometer and measure the temperature in the vagina or rectum. You can also measure the temperature in the mouth, but then the basal temperature values ​​will be slightly higher. Use only one temperature measurement method to avoid inaccurate results. Take the temperature measurement within 5 minutes. After that, write down the temperature readings in a specially designated notebook or calendar. You can also create a basal temperature graph with the date on the abscissa and the basal temperature on the ordinate. Repeat the above steps throughout the cycle, and then it will not be difficult to determine the onset of pregnancy. The fact is that the cycle is divided into two phases - the phase preceding ovulation and the phase of the corpus luteum. In the first part of the cycle, the basal temperature is kept at about 37 ° C. During ovulation, a jump in temperature occurs, and its value will be about 37.2-37.3 ° C. Before the next menstruation, the basal temperature again drops to 37 ° C. The corpus luteum phase is almost always around 14 days, while the period before ovulation can vary. Thus, if you find that the basal temperature remains high for more than 17 days in a row, you can already talk about a probable pregnancy. Pay attention Despite the popularity of this method for determining pregnancy, it cannot be considered absolutely reliable. Its effectiveness can be influenced by hormonal disruptions in the body. In any case, you should consult your doctor for a definitive diagnosis of pregnancy.

How to tell if you're pregnant without a test

Having asked such a question to the doctor, he will say that there are simply no such methods. Unless only to be tested for the presence of human chorionic gonadotropin in the blood. But this does not apply to home diagnostics.

It is possible to determine pregnancy without a test, both by seeking advice from a doctor, and by identifying its main symptoms that affect the female body. Anything you try to do at home to detect pregnancy without using a test may end up with far-fetched signs and symptoms. Therefore, it is necessary to understand the methods that can give at least some idea of ​​the veracity of your assumptions.

How can a woman tell if she is pregnant without a test? Perhaps everyone will answer that a clear sign is a delay in menstruation. It is as a result of this that the search for additional symptoms most often begins. Only sometimes menstruation (small spotting) can continue during pregnancy, and its absence is caused by completely different reasons. Therefore, this sign of pregnancy is not reliable and it is better not to rely on it without a test.

How else can you check pregnancy without a test? One option is to learn how to measure basal temperature. Most often, its measurement is carried out to check hormonal levels, fertility, and is not used as a means to help recognize pregnancy without a test. In this case, it is necessary, starting from the first day of your menstrual cycle, to record the temperature change. And then display the obtained data in the form of a graph, which is built on the basis of two scales: X and Y. How, in this case, without a test, to find out about pregnancy by measuring the temperature? The menstrual cycle is divided into two phases: before and after ovulation. Both phases are relatively the same in duration, but the second phase (about 16-18 days) is due to an increase in basal temperature, which can be slightly more than 37 degrees. If its decrease closer to the beginning of menstruation is not noted, this may indicate pregnancy. It is necessary to hold a mercury thermometer either in the mouth (5 minutes), or measure the temperature in the rectum or vagina (3 minutes). Using this method, pregnancy detection is possible without a test.

Checking pregnancy without using a test may involve “diagnosing” a woman's condition at home. So, the symptoms include pain in the mammary glands. This symptom is the most informative for those women who have never encountered mastopathy and are thinking about how, in addition to using a test, pregnancy can be determined. Sometimes it may be so, Checking pregnancy without a test that it hurts even to touch the breast. In addition, it is possible to almost double the mammary glands.

Another symptom of pregnancy is pain in the uterus (and / or ovary). It is similar to the pain that many women experience before menstruation, or in its early days. Only, in spite of it, the bleeding does not start. Sometimes this symptom is also evidence of an ectopic pregnancy. Therefore, it is useful to determine pregnancy by temperature, without a test, or for other symptoms, but it is still better to immediately consult a doctor.

In the age of computerization, as soon as the mind of a person is not refined. It became possible to check pregnancy without a test through its online version. Of course, it is impossible to make such a diagnosis “through the monitor”. Moreover, it is a series of standard questions about your well-being. But, sometimes, what tricks women do not resort to to determine pregnancy, even without a regular test, so at least with the help of a virtual one.

Basal temperature measurement is more accurate.

The temperature measured in the rectum, vagina, or mouth is called basal temperature. Indications of this type of temperature make it possible to determine the correct secretion of hormones by the ovaries in different phases of the menstrual cycle. An essential condition for correct basal temperature readings is the use of the same method of measuring it, using the same thermometer and at the same time.
The most common measurement is basal temperature in the rectum. The data of such measurements make it possible to draw up a complete picture of the state of the reproductive system and identify the existing pathology of the menstrual cycle. The basal temperature measurement technique also helps to determine on which days the egg is ripening, which allows planning both the desired conception and the use of this method for the purpose of contraception.
Basal temperature is measured in the morning, immediately after waking up. In this case, you should not get up or sit down, and the thermometer must be prepared in the evening within reach, so that you do not need to reach for it. In general, activity during basal temperature measurement should be minimal. Some experts advise taking measurements without opening your eyes, as daylight can increase the release of certain hormones.
The prepared thermometer is inserted into the rectum with a narrow end and the basal temperature is measured for five minutes. After that, the thermometer is removed, and the readings are entered into the table. In addition to the columns "Date", "Day of the cycle", "Readings of basal temperature" and "Discharge", the table must contain the column "Notes". This column contains all the factors that in one way or another could affect the change in basal temperature: diseases, including with an increase in temperature; drinking alcohol the day before; diarrhea; local inflammatory processes in the rectum; exacerbation of diseases of the female genitourinary sphere; stressful situation; sexual intercourse the night before or in the morning; little sleep, etc.
The general rule of thumb is to measure your basal temperature after at least three hours of uninterrupted sleep. That is, if intercourse was in the morning and after that you slept a little, the basal temperature indicator will still be changed, due to non-compliance with the three-hour sleep.
Since the main purpose of measuring basal temperature is to determine the moment of ovulation, a graph is built for this, based on the readings. This takes into account the temperature difference that corresponds to different phases of the menstrual cycle. Typically, during menstruation, the temperature is kept at 37 ° C. During the maturation of the follicle (the first phase of the cycle), the temperature does not exceed 37-37.5 ° C. Before ovulation itself, it decreases (the result of the action of estrogen), and after it the temperature rises to 37.6-38.6 ° C (the effect of progesterone). Until the next menstruation, the temperature remains elevated. If the basal temperature indicators in the first phase, relatively to the second, are high, then this may indicate a small amount of estrogen in the body and requires correction with drugs containing female sex hormones. On the contrary, if in the second phase, relative to the first, a low basal temperature is observed, then this is an indicator of a low level of progesterone and here drugs are also prescribed to correct the hormonal background. However, this should be done only after passing the appropriate tests for hormones and a doctor's prescription.
In order to use the basal temperature method to protect against unwanted pregnancy, it must be borne in mind that not only 13 and 14 days of the cycle, in which ovulation usually occurs during a 28-day cycle, can be considered dangerous. Having calculated the individual ovulation juice with the help of the graph, you need to remember that every month this period can be influenced by various factors, accelerating its onset or, conversely, delaying it. Therefore, in the period from the beginning of menstruation until the evening of the 3rd day after the rise in basal temperature, which occurs after ovulation, it is better to use additional measures to prevent unwanted pregnancy.
Thus, with the help of modern methods, a specialist will be able to determine the onset of pregnancy even at the earliest possible date.

Instructions

Get a thermometer to measure basal temperature. It can be mercury or electronic. If you are going to use an electronic thermometer, then compare its readings with a mercury thermometer and take into account the existing error for further manipulations. It is important to always use the same thermometer.
2

Before going to bed, place a prepared thermometer near your bed so that you can easily get it out in the morning.
3

In the morning, without changing position, take a thermometer and measure the temperature in the vagina or rectum. You can also measure the temperature in the mouth, but then the basal temperature values ​​will be slightly higher. Use only one temperature measurement method to avoid inaccurate results. Take the temperature measurement within 5 minutes.
4

After that, write down the temperature readings in a specially designated notebook or calendar. You can also create a basal temperature graph with the date on the abscissa and the basal temperature on the ordinate.
5

Repeat the above steps throughout the cycle, and then it will not be difficult to determine the onset of pregnancy. The fact is that the cycle is divided into two phases - the phase preceding ovulation and the phase of the corpus luteum. In the first part of the cycle, the basal temperature is kept at about 37 ° C. During ovulation, a jump in temperature occurs, and its value will be about 37.2-37.3 ° C. Before the next menstruation, the basal temperature drops again to 37 ° C. The corpus luteum phase is almost always around 14 days, while the period before ovulation can vary. Thus, if you find that the basal temperature remains high for more than 17 days in a row, you can already talk about a probable pregnancy.