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What should be the basal temperature before menstruation?

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The basal temperature (BT) is considered the lowest temperature index of the human body. The most reliable data obtained through measurements in the vagina and rectum.

The need to study the temperature values ​​is based on the close relationship between the hormonal background of a woman and the process of thermoregulation. With fluctuations in the level of progesterone, which is directly related to fertilization, the indicators change. This happens at different stages of the menstrual cycle. By measuring and analyzing the basal temperature during menstruation, the state of reproductive health is assessed and deviations are detected in a timely manner.

Basal temperature calendar

This gynecological method has long been known. Many doctors recommend keeping a calendar of basal temperature, despite the fact that it is an auxiliary way of studying the normal course of physiological processes.

There are more reliable and modern methods, but in certain situations a schedule of basal temperature before menstruation can be useful. Of great importance is the accuracy of measurements and interpretation of data.

The main requirement is to take measurements every day, regardless of the state of health. Indicators are fixed in the schedule for 3-4 months. Among the mandatory items should be the date and temperature values. Separately marked the days when the usual way of life was broken: feasts with alcohol, illness and stress, medication.

How does the temperature change during the menstrual cycle

Each phase of the cycle has its own standards and temperature standards. Any fluctuations in the values ​​of a healthy woman is a reaction to changes in the body.

Studying the basal temperature before menstruation allows you to identify and understand many important points. Based on the information received, doctors and women themselves will learn about hormonal disorders, days of ovulation and future periods, the presence of gynecological diseases. The cyclic calendar is addressed when planning and diagnosing conception, as well as in cases where pregnancy is undesirable and must be prevented.

The essence of the gynecological method is to assess the cyclical changes. With menstruation, basal temperature may rise and fall. Values ​​depend on how the egg behaves.

In a non-pregnant woman on the first day of menstruation, the temperature remains normal - within 37 degrees. The same indicators are observed a week before menstruation. With each subsequent day, the values ​​begin to fall, fluctuate and by the last day become extremely low - 36.3–36.5 ºС. This is the most optimal period for the formation and growth of the follicle.

When a dominant follicle breaks through, a corpus luteum is formed, producing progesterone, which is responsible for conception and prepares the uterus to accept an egg. A sharp release of the hormone during menstruation causes a temperature increase to 37–37.5 ºС. For the onset of pregnancy is the most favorable time.

If conception has occurred, the data in the graph will not change. With accurate fixation in terms of should be stable. This picture indicates fertilization. You can confirm the assumptions using the test.

According to the temperature schedule, even the day of conception is determined. This is usually reflected in temperature fluctuations: first, it decreases sharply, after which it rapidly increases. Such jumps occur under the influence of progesterone. When its level falls, the indices decrease, indicating that fertilization has not occurred.

When studying the graph, it is necessary to consider the errors and factors affecting the reliability of values. The cause of incorrect data may be:

  • stresses
  • gynecological and colds,
  • serious physical exertion
  • sexual contacts,
  • alcohol consumption,
  • taking contraceptives and drugs
  • bad (short) sleep.

These factors increase blood flow and provoke temperature fluctuations during menstruation.

What does the basal temperature rise mean?

Before the beginning of the monthly values ​​vary between 36–36.5 ºС. This is the norm, but temperature deviations are possible depending on climatic conditions, state of health, lifestyle, physiological characteristics.

The growth of indicators is accompanied by the second phase of the menstrual cycle, when ovulation occurs. High temperatures (37–37.5 ºС) may indicate pregnancy has begun.

More details about the phases of the monthly cycle can be found in a separate article on our website.

There are also atypical situations when changes and rise in basal temperature are caused by gynecological diseases and hormonal imbalances.

We single out the most frequent deviations associated with an increase in basal temperature before menstruation:

  1. Progesterone deficiency. The presence of a serious pathology is accompanied by a slight increase in temperature, which lasts no more than 7 days. The difference is 0.4 degrees, while the cycle is reduced to 10 days, which provokes the onset of menstruation ahead of time.
  2. Risk of miscarriage. With a confirmed pregnancy, temperature growth to 37.2 ºС and untimely monthly periods may indicate a threat of miscarriage and ectopic pregnancy.
  3. Endometritis of the uterus. The beginning inflammatory process in the first days of menstruation causes a rise in temperature to 37 ºС. Such fluctuations before menstruation is one of the signs of pathology in the mucous layer of the uterus. Similar phenomena are observed with inflammation of the appendages.

It is important! If, against the background of stable changes during monthly periods, sharp temperature fluctuations are observed, consult a doctor. Indicators 38 ºС and higher indicate the presence of serious gynecological diseases.

How to measure

The resulting BT schedule for menstruation is a kind of health scale, reflecting the complete picture of changes in the female body. The accuracy of the information of this technique depends on the correctness of the procedure.

Two measuring methods are used: rectally (in the rectum) or vaginally (in the vagina). To determine pregnancy, the most effective measurement of rectal temperature is considered. When using a mercury thermometer, the measurement time is 5–7 minutes; it’s enough to hold the electronic device for 1 minute. Input depth - 2-3 cm.

The procedure is carried out in the morning after waking up, preferably at the same time. It is better not to get up from the bed, so the thermometer should be within reach. When measuring, walking, bending and squats are not allowed. Any movements affect blood circulation and affect the performance.

In order to determine the day of ovulation, you can use an alternative method - folliculometry. You can read more about the procedure in a separate article on our website.

How to measure basal temperature

Basal (rectal) temperature is not only popular and free, but also a fairly accurate method for calculating ovulation. And in order to avoid errors in the data, the basal temperature before menstruation should be measured as follows:

  • The study is conducted in the morning at the same hour. The difference is not more than 30 min.

  • It is necessary to measure even before getting out of bed, lying down. In this case, a night's sleep should last more than 4 hours.
  • The duration of the procedure is 7-10 minutes.
  • A thermometer is inserted into the anus (or into the vagina) in the prone position. In this case, it would be best if no sharp movements were made, a sitting position was not taken. That is why it will be better if the thermometer is "knocked down" in the evening and put next to the bed so that you can reach out with your hand.
  • It is undesirable to open your eyes. Bright light can enhance the release of hormones, which is why the data will be inaccurate.
  • If you measure BT, holding a thermometer in your mouth, you still should not make sharp movements and not open your eyes.
  • If you suddenly want to go to the toilet, and the time has not yet come to measure, then it is better to measure the temperature first, and then just get up. In the chart should be a note about it.
  • Try to use the same thermometer. If for some reason the thermometer had to be replaced, then it is necessary to make a note about it.
  • Keep a schedule that will indicate both the temperature and what could have affected it (then it will be easier to find out what the cause of the changes in the schedule is).

BT is measured over 3–4 cycles.

What indicators of basal temperature are considered normal

Virtually every woman notices a slight fluctuation in body temperature. If the norm is considered to be 36.6 degrees, then for a girl on certain days she can be above 37 degrees, although the general physical condition will be good. Why is this happening?

During the menstrual cycle, a different amount of hormones is produced, and since BT depends on hormonal levels, its performance will also be different.

What temperature should be?

The highest temperature should be observed in the luteal phase (lasts 12–16 days) and can be within 36.8–37.5 degrees. A few days before the onset of menstruation, it decreases by several divisions and is 37 ° C on the first day of menstruation.

On the last day of the month, it may drop to approximately 36.3 ° C. In the follicular phase, when egg maturation occurs, it can be in the range of 36.6 ° C - 36.9 ° C.

Each woman's basal temperature before menstruation will be individual, and therefore the indicators of the follicular and luteal phases are not as important as the difference between them. It should be 0.4 ° C - 0.6 ° C.

The basal temperature before menstruation in each cycle should be the same. If deviations are noticeable in the graph, and there are no obvious reasons (for example, they got up before the measurement, moved), then you should consult a doctor.

BT abnormalities during ovulation

Rectal body temperature makes it possible to monitor health. Depending on what failures in the testimony issued a schedule, the following diseases can be detected:

  • Progesterone deficiency. Occurs in the second phase of the cycle. At the same time, there is an increase in the basal temperature before menstruation by less than 0.4 degrees after the first phase (should be approximately 0.6 degrees), or the rise holds less than 7 days. The signal is also the duration of the ovulatory phase of 10 days or less.

  • Endometritis. It is characterized by: a temperature above 37 ° C during menstruation, a slight decrease before menstruation.
  • Inflammation of the uterus. It can be suspected in such cases as: in the follicular phase, BT for several days rose to 37 ° C and sharply decreased, indicators of the 2nd phase differ from those in previous graphs (increased by several degrees), during menstruation it approaches 38.
  • Pregnancy is likely if temperatures above 37 ° C are observed for more than 14 days in the second phase.
  • Miscarriage. It is assumed if the temperature is 37 before menstruation or there are uncharacteristic discharges on these days.

Scheduling rectal temperature

Since the basal temperature before menstruation makes it possible to determine the days of ovulation, doctors recommend keeping a schedule. This is especially true in cases where:

  • pregnancy does not occur within a year,
  • there is a suspicion of hormonal disorders,
  • the girl is supposed to be sterile,
  • you want a baby of a certain gender.

Also, the BT schedule allows you to find out:

  • does the maturation of the egg, and on what days it happens,
  • ovulation occurred or not
  • Is there a malfunction in the endocrine system?
  • is there a problem with reproductive organs, and if so, which one,
  • whether the ovaries work properly, the right amount of hormones is produced or not,
  • day of the next menstruation,
  • whether pregnancy has come.

Properly compiled schedule gives you the opportunity to suspect the problem "at an early stage", but doctors do not make final conclusions without additional research.

The schedule should include such lines as:

  • day of month
  • day of the menstrual cycle
  • basal temperature
  • notes (it is necessary to record those factors that could affect BT).

If the schedule indicates a malfunction in the body, it is necessary to contact a gynecologist. It is possible to decipher and find out the reasons for the failure itself, but without additional analyzes, no one will give a 100% guarantee of correctness of the diagnosis.

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Definition

Basal temperature - an indicator that can indicate the course of certain processes in the body. With the concept, as we have said, women are planning pregnancy.

The mentioned component helps to determine when the critical days come or ovulation occurs. The main thing is to know what should be the basal temperature. Before menstruation, it is one, after them - the other. And this will have to be remembered under any circumstances.

Menstrual cycle and changes

Unfortunately, it is impossible to find a definite answer on the topic being studied. External factors affect the body. Moreover, women constantly go through the menstrual cycle.

It can be divided into 3 phases:

In all these intervals, body temperature will be different. And this is quite normal.

Follicular stage

What is the basal temperature before menstruation normal? Consider all possible scenarios.

In the menstrual cycle, the first stage is follicular. This is the period of maturation of the egg in the follicle. It occurs during critical days and lasts until approximately the middle of the cycle.

What is the value of basal temperature before menstruation in this case? The corresponding figure should stop at 36.6 degrees. The difference may be 0.1 degrees.

During critical days

Basal temperature before menstrual 36 degrees can be, but it is not the norm. We will talk about deviations later. First, consider the typical life situations.

During critical days the temperature is lowered. It will be below 36.6 and above 36.1 degrees. In the last days of menstruation, the average is 36.4 degrees. This is normal.

Before the day "X"

Ovulation is the period when the chances of getting pregnant are the highest. And therefore girls often "catch" her. Monitoring the temperature of the body is one of the most accurate methods for determining ovulation.

Before ovulation (as well as monthly), the indicators will be lower than normal by 0.1-0.2 degrees. A day or two before the day of "X" they decrease and then increase.

Basal temperature before menstruation is important. She may indicate pregnancy, ovulation, or any disease.

The basal temperature before menstruation at 37.2-37 degrees is normal, if ovulation is soon. The closer the day of the release of the egg from the follicle, the higher will be the corresponding figures.

Is it normal to increase the indicator to 37.5 degrees? Yes. This phenomenon is associated with an increase in progesterone. It raises body temperature. With its help, further development of the fetus occurs with successful fertilization.

Luteal phase

What is the basal temperature before menstruation after the middle of the cycle? Namely, after ovulation?

The luteal phase is accompanied by an increased “temperature regime”. During this period, the temperature is considered to be from 37 to 37.5 degrees Celsius. Below - perhaps higher - no.

Соответственно, повышение температуры не всегда является признаком болезни или поводом для паники. Во всяком случае у половозрелых женщин.

За пару дней

And what is the basal temperature before menstruation a day or 3 days before the "incident"? Definitely answer this question will not work.

The thing is that the spread of indicators in this period is very extensive. The normal is a gap of 36.8-37.2 degrees. Such values ​​should not cause panic.

Phase Difference

In general, the studied component often depends solely on the body of a single person. And therefore it is impossible to say exactly when this or that value is a deviation. We'll have to carefully monitor their health, so as not to be mistaken.

Basal temperature is not measured in the day before menstruation. Physical activity distorts reality. Therefore, measurements are carried out only in the morning. And we already met approximate temperatures.

It is important to pay attention to the difference between the phases of the menstrual cycle relative to the basal temperature. Before menstruation, it is increased, after them it goes down.

If you look closely at the schedule of BT, you can see that the cycle is divided into 2 phases - before and after ovulation. The spread of indicators between them should be no more than 0.4 degrees. Otherwise it is necessary to suspect the violation of vital processes in the body.

Pregnancy

It is hard to believe, but the indicator we studied helps determine pregnancy. The main thing is to know how to do it.

Here are the phenomena that can occur with successful fertilization of an egg:

  1. The temperature level will rise to 37 degrees (or higher) and hold on at this value for 3 days longer than in the previous cycle.
  2. The graph of BT has not 2 waves of temperature fluctuations, but 3.
  3. The basal temperature is elevated for more than 3 weeks.

All these phenomena often indicate the development of pregnancy. If a girl observes them at home, you can do a test at home or go to a gynecologist.

Progesterone deficiency

Now a few words about how the basal temperature graph will look before the monthly and after them in the case of individual diseases.

For example, progesterone deficiency is observed in the body. Then the graph "jumps" down. The temperature rises slowly and stays elevated for too long. The second segment of the cycle is shortened to 10 days (instead of the average 14).

With progesterone deficiency, a decrease is observed at the very beginning of the cycle (36 degrees and below), then the temperature slowly rises, but it does not reach normal values.

Endometritis

Quite often, women experience endometritis. So called inflammation of the uterine lining. In this case, an increase in temperature is observed.

As a rule, the temperature value will fluctuate within the normal range. But in the first days of the new cycle, it rises to 37-37.2 degrees. This phenomenon indicates the inflammatory process in the body. And this is not necessarily endometritis.

No ovulation

What if there is no ovulation? What then happens to the indicator being studied?

This situation is well monitored according to the BT schedule. The thing is that in the absence of ovulation, the temperature can be any. Schedule is very difficult to build, because the points are arranged randomly. No dynamics or principles of increase / decrease in the drawing can not be determined. And break the "picture" into 2 phases too.

Appendages and their inflammation

Sometimes it happens that a woman suffers from inflammation of the appendages and is unaware of it. The indicator under study will help clarify the situation.

Now we figured out the temperature of a healthy woman. If there is inflammation in the body, the performance rises. In our case, we will face a very high temperature after ovulation. It increases to 38 degrees or more. In the first half of the menstrual cycle, the indicators will be near the level of 37 degrees.

Impact factors

It is worth paying attention to the fact that the basal temperature may vary depending on external factors. Their effects on the body are underestimated by some.

What phenomena can distort the data? For example:

  • stresses
  • overwork,
  • insomnia,
  • alcohol consumption,
  • having bad habits
  • transfers, flights,
  • acclimatization,
  • sexual intercourse 4-6 hours before data collection,
  • taking hormone-containing drugs.

This is the most common phenomenon. They can correct temperature fluctuations before menstruation in one way or another.

How to achieve effectiveness

Some are interested in what is needed in order to navigate graphs and data on BT. There is only one really working advice - keep this schedule constantly.

You can navigate through the basal temperature after 2-3 cycles, the data for which are recorded on a special drawing. It is advisable to draw conclusions on the graphs for the past six months.

How to measure temperature

How much basal temperature before menstruation? The answer to this question will no longer cause any trouble. Each girl will be able to understand whether everything is normal with her body on any given day of the menstrual cycle.

How to measure BT? To do this, you can collect data:

  • orally
  • rectally
  • vaginal method.

The most accurate indicators of BT are collected in the anus. That it is better to give preference.

In any case, the girl will need to act like this:

  1. Wake up and immediately take a measuring device.
  2. Keep the thermometer in the mouth for at least 5 minutes, in the vagina or rectum - 3 minutes.
  3. Record the data, putting a mark on the graph of BT.

That's all. It would seem that there is nothing difficult in this. But in fact, drawing up a schedule delivers certain trouble to the representatives of the weaker sex.

Tips for women

Consider some useful tips that help to obtain the most accurate data on body temperature.

They look like this:

  1. Measure the temperature only in the morning. Physical activity and fatigue greatly distort the real picture of what is happening in the body.
  2. Use when measuring the same device. If it is necessary to replace the thermometer, it is recommended to make a corresponding mark on the temperature graph.
  3. To measure the temperature of only one of the proposed methods.
  4. Record all the data on the BT and record them on the appropriate schedule. For example, using special "calculators". They are on almost every female forum.
  5. Collect data at the same time. As a rule, it is best to do this at 6-7 am or immediately after waking up.

That's all. As we have said, it is necessary to measure body temperature, without getting out of bed. Therefore, it is better to put a measuring device near the bed.

Conclusion

We fully understood the issue at hand. From now on, every girl will be able to build a graph of BT and understand when she has ovulation. Diseases and inflammations can also be seen in the corresponding drawing.

As a rule, it is BT that helps women when planning pregnancy. This indicator is of interest to girls with infertility. But it is not necessary to determine pregnancy, ovulation or inflammatory processes only by body temperature. As already mentioned, this indicator is easily distorted under the influence of external factors.

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