Normal women of childbearing age have 1 menstrual cycle every month, starting from this menstrual cramp.
1 day of the next menstrual cycle is called 1 menstrual cycle. Like contraception.
Considering that every menstrual cycle of women can be divided into menstrual period and ovulation period.
And the safety period. Safe period contraception is a way to stop sexual life during ovulation.
Contraceptive methods. This is a traditional contraceptive method, in the contraceptive pill and uterus.
Before the appearance of intrauterine device, it was one of the commonly used contraceptive methods at home and abroad.
Women's ovulation date is generally around 14 days before the next menstruation.
After the ovum is discharged from the ovary, it can live in the fallopian tube for 1-2 days, waiting for reception.
Fines; Male sperm can maintain fertilization ability in female reproductive tract for 2-3 days.
Therefore, it is easy to get pregnant by having sex a few days before and after ovulation. For insurance
For convenience, we will * * * the first 5 days and the last 4 days of the ovulation day, including the ovulation day.
10 day is called ovulation period. Because sexual intercourse during ovulation is easy to conceive, so
Ovulation period is also called susceptible pregnancy or dangerous period.
The safety period is divided into pre-ovulation safety period and post-ovulation safety period. From menstruation
The date from the day of cleaning to the day before ovulation is before ovulation.
Full version. From the first day after ovulation to the day before the next menstrual cramp.
Days is the safe period after ovulation. The safe period after ovulation is more secure than before ovulation.
All of them. This is because some women are sometimes influenced by environmental changes and mood swings.
Ring ovulation in advance, so that the safety period before ovulation will be shortened, and yourself and
I don't know, so the safe period before ovulation is unsafe. The ovaries are in one place
Ovulation twice in menstrual cycle, that is, after ovulation, is very rare.
Generally, there will be no second ovulation before the next menstrual cramp.
Therefore, the safe period after ovulation is safer.
The key to using safe period contraception is to determine the date of ovulation for women. ovary
When ovulating, there is generally no special feeling, even though some women may have a lower abdomen.
Symptoms such as pain, back pain, breast swelling and mood changes, but these phenomena are not.
It is a unique symptom during ovulation and cannot be used as a basis for ovulation. Menstruation and
Ovulation changes periodically, and there is a close relationship between them.
If we grasp the changing law of the two, we can use the indirect method to measure the discharge.
Date of the egg. There are many ways to determine the date of ovulation, but women can do it themselves.
Mastering methods include: calculating according to menstrual cycle, measuring basal body temperature and observing.
Check cervical mucus secretion, etc.
Calculate ovulation period according to menstrual cycle
The method of calculating ovulation period according to menstrual cycle is also called calendar method. Menstruation and
Ovulation is influenced by endocrine hormones in pituitary gland and ovary, and occurs once a week.
Periodic change, the period length of both is the same, which is every month 1 week.
During menstruation, ovulation occurs between two periods. Women have a long menstrual cycle.
Yes, it's short, but the interval between ovulation day and next menstruation is relatively fixed.
Yes, it usually takes about 14 days. According to this relationship between ovulation and menstruation
Ovulation period can be calculated according to menstrual cycle. The calculation method comes from the next time
From 1 day of menstrual cramps, the day of ovulation is counted down to 14 days or negative 14 days.
Ovulation date, the first 5 days and the last 4 days together are called ovulation period. this is
Theoretical basis of contraception in safe period. For example, Jane Doe's menstrual cycle is 28.
The 1 day of this menstrual cramp is 65438+February 2, so the next menstruation is coming.
Tide at 65438+February 30th (65438+February 2nd plus 28 days), and then subtract 14 from 65438+February 30th.
God, then 65438+February 16 is ovulation day. Ovulation day, 5 days before ovulation and 4 days after ovulation,
That is, 65438+February 1 1-20 is the ovulation period. Except menstrual period and ovulation period, the rest
All the time is a safe period. You don't have to take any contraceptive measures during safe sex.
Drugs and contraceptives.
To calculate ovulation period by this method, we must first know the length of menstrual cycle.
In order to calculate the start date and ovulation period of the next menstrual cramp, so
It can only be applied to women with normal menstrual cycle. For menstrual cycles, no.
Ordinary women can't calculate the date of their next menstrual cramp. So there is nothing.
Methods of calculating ovulation date and ovulation period.
It is easy to fail to use the calendar method for contraception. Because some women sometimes have health problems.
Environment, environmental changes and mood swings will delay or advance ovulation,
The ovulation period calculated by menstrual cycle is not correct enough. According to foreign reports
According to statistics, the failure rate of using calendar method for contraception is 14.4%-47%. Therefore, this
This method is only suitable for people with normal menstrual cycle who live together for a long time.
It is used by people who correctly master the calculation of safety period. For people with irregular menstrual cycles
This method is used by couples visiting relatives and women with changing living environment.
It's just unreliable.
Determination of ovulation period by basal body temperature measurement
Basal body temperature means that the human body wakes up after a long sleep and has not yet entered.
Body temperature measured before any activity.
The basal body temperature of normal women of childbearing age is periodic, just like menstrual cycle.
Change. This temperature change is related to ovulation. Under normal circumstances, women
The basal body temperature was lower before ovulation and higher after ovulation. This is because, when
After ovulation, the ovary forms corpus luteum and secretes more progesterone to stimulate the next ovulation.
The thermoregulatory center of thalamus makes basal body temperature rise and keep rising.
It doesn't start to decline until the next menstrual period. The basis of the next menstrual cycle
Repeat the above changes in body temperature.
Record the basal body temperature measured every day on the temperature record sheet.
And connected into a curve, we can see that the body temperature in the first half of menstruation is low, and the body temperature after menstruation is low.
The temperature rises in the first half of the year, and this temperature curve is called biphasic form.
The temperature curve shows that there is ovulation in the ovary, and ovulation usually occurs at body temperature.
Before the ascent or during the descent to Shangsheng Gao. Some people think that before the temperature rises,
The lowest point is ovulation day, but most of them don't exist, only about 20% of women do.
Performance. It is easy to get pregnant within 3 days after the basal body temperature rises, from the fourth day to the second day.
Before the second menstruation, it is a "safe period after ovulation".
Basic temperature measurement can only indicate that ovulation has occurred, but can not predict ovulation.
When to ovulate, so you can only determine the safe period after ovulation, not.
Determine the safe period before ovulation. If we can cooperate with calendar method and cervical mucus observation method,
Method can solve this problem.
In most cases, basal body temperature measurement is very important to judge the safe period after ovulation.
It's very reliable, but sometimes you will encounter irregular temperature curves, so it won't work.
Determine the exact time of ovulation. In this case, safe period contraception cannot be used.
Yes
How to measure basal body temperature correctly
A person's body temperature is influenced by the external environment and internal activities of the body.
Fluctuations, in order to eliminate these external and internal influences, therefore,
The body temperature before waking up at 6-7 am is often used as the basal body temperature.
. Basal body temperature is the lowest body temperature in a day and night.
Although the method of measuring basal body temperature is simple, it is strict.
Long-term persistence. Prepare thermometer and recording base before measurement.
Warm recording paper (if there is no such recording paper, you can also use small square paper instead.
For), from the menstrual period, don't talk or talk before getting up every morning.
In any activity, put the thermometer in your mouth for 5 minutes, and then
Record the measured temperature on the temperature record sheet.
In order to improve the accuracy of measuring basal body temperature, we should measure it before going to bed every night.
Throw the mercury column on the thermometer below 35℃ and put it on the bedside table.
Or placed beside the pillow, so as to be convenient to carry and reduce activities when in use. if
Get up and get a thermometer, which will raise the basal body temperature, so that the body temperature of this day.
Value loses its meaning. For women working in middle shift or night shift, the measurement is based on
The time of body temperature is when you wake up after sleeping for 4-6 hours.
Generally, it is necessary to continuously measure the basal body temperature for more than 3 menstrual cycles.
Question: If the menstrual cycle is regular, how many menstrual cycles are measured?
After the basal body temperature, you will basically know your ovulation date. In order to reduce
Trouble, you can choose to start measuring your temperature 3-4 days before ovulation.
After the temperature rises, continue to test for 3-4 days, that is, only measure the discharge.
The basal body temperature in the egg stage is used for contraception.
How to record basal body temperature correctly
Correctly record the measured basal body temperature on the body temperature record table, which can
Reflect the function of ovary. If the record is incorrect, it will lose its meaning.
. The following is the basic figure of normal women of childbearing age in a menstrual cycle.
Temperature curve. As can be seen from the figure, the first half of the body temperature is low, and the second half is low.
The temperature rises, showing a typical biphasic body temperature curve. This temperature curve shows that
Ovary has ovulation function, and the intersection of high and low curves of body temperature is ovarian ovulation.
Dating. The vertical axis coordinates in the figure indicate the degree of body temperature, and each cell is 0. 1.
The horizontal axis coordinates indicate the date and menstrual cycle day, and each cell is 1 day.
From the first 1 day of menstrual cramps, the daily body temperature is measured with
Draw points in the grid of the corresponding temperature record sheet until the next menstruation.
Before onset 1 day, finally connect the points in sequence with a straight line.
Over the years, it has become the basic temperature curve of 1 menstrual cycle.
The black part in the picture indicates the menstrual period. In case of cold, fever and diarrhea.
Insomnia, drinking, using electric blankets, etc. , often easy to affect the foundation.
The temperature should be written at the bottom of the form.
What's the use of measuring basal body temperature?
It is very important to measure the basal body temperature of normal women of childbearing age in medicine.
Mode, which is a simple, practical, easy to learn and more reliable way of self-monitoring.
Methods of measuring ovarian function. According to the change of basal body temperature, we can know indirectly.
Understand the ovarian function of women, know whether there is ovulation, and predict the ovulation date and yellow.
Physical function. Measuring basal body temperature usually has the following purposes:
(1) Observe ovarian function.
The basal body temperature curve of normal women of childbearing age is biphasic, that is, menstrual week.
The first half of menstruation is low and the second half is high, indicating that the ovary is normal.
Ovulation function. If the basal body temperature shows a monophasic curve (no phenomenon of low before and high after)
), indicating that the ovary has no ovulation function.
(2) Diagnosis of early pregnancy
Measuring basal body temperature is the simplest pregnancy diagnosis and has a rapid diagnostic effect.
Break the law. Women with regular menstrual cycles, such as sudden menopause, and basic
If the temperature rises and does not drop for more than 18 days, a diagnosis can usually be made.
For pregnancy. Because after ovulation, the follicle forms corpus luteum and secretes progesterone.
Progesterone can raise body temperature. If the egg is fertilized and pregnant, the corpus luteum will follow.
Continuous secretion of progesterone, so the body temperature has been maintained at a high level.
(3) guide contraception
By measuring the basal body temperature, we can know the date of ovulation of women, so we can take
Use rhythm contraception.
(4) guiding fertility
Contrary to contraception, if you want children, you should choose to have sex during ovulation.
Pay. Because measuring basal body temperature can determine the date of ovulation in women, so
Can be used to guide fertility. In particular, some women who are not easy to get pregnant are arranged in the row.
Egg intercourse can increase the chances of conception.
Observing cervical mucus to determine ovulation period
In the 1970s, John and Evelyn Billings in Australia.
According to the characteristics of periodic physiological changes of female reproductive system, doctors initiated uterine contractions.
Cervical mucus observation method is used to determine ovulation period to guide contraception. This method
It is called "Billings Natural Contraception Method" and has been approved by the World Health Organization.
Recommended. In recent years, Billings law has been popularized in more than 100 countries.
. In September, 1987, Mrs Wilson, American Family Foundation, led a team to our country.
This law was popularized and teacher training courses were held. Subsequently, Tianjin family planning
The institute selected 300 women of childbearing age to use "Billings method" for contraception. male
Scientists observed more than 2,000 menstrual cycles of the subjects in just three months.
Contraception during menstruation failed.
Cervical mucus is produced by special cells in the cervical canal.
Moreover, the amount and nature of its secretion also change with the change of menstrual cycle.
In 1 menstrual cycle, there are three types: difficult pregnancy type, easy pregnancy type and polar type.
Three kinds of cervical mucus that are easy to conceive.
Cervical mucus that is difficult to conceive: mucus in the early menstrual cycle, in
It appears after menstruation is clean and lasts for about 3 days. At this time, the cervical mucus is less and sticky.
Thick, the vulva is dry and there is no moist feeling, and the underwear will not be sticky.
Pregnancy-prone cervical mucus: This mucus appears in the first stage of the menstrual cycle.
After 9- 10 days, with the development of ovarian follicles, the estrogen level increased.
Cervical mucus gradually increased, thin and milky white. The vulva is wet at this time.
Moisturizing feeling
Very prolific cervical mucus: A few days before ovulation, estrogen increased further.
In addition, the cervical mucus contains more water and is as clear and sticky as egg white.
The smallest, smooth and elastic, can pull mucus well with thumb and forefinger.
Filamentous (up to 10 cm or more), when the vulva feels obvious.
Humidity. It is generally believed that the secretion is clear and transparent, egg white-like, and the drawing degree is the highest.
A long day is probably ovulation day, and there are three days before and after this day.
Egg stage.
After ovulation, the corpus luteum forms and produces progesterone, thus inhibiting the uterus.
Neck cells secrete mucus, so cervical mucus becomes less and sticky, becoming NO.
Pregnancy-prone cervical mucus until the next menstrual period. Next menstrual cycle
The cervical mucus showed the above changes again.
Cervical mucus method is suitable for contraception for women with normal menstruation, and it is also suitable for women with normal menstruation.
Used for contraception of irregular menstruation, menopausal women and lactating women. if
Women who use IUD combined with cervical mucus for contraception can reduce the number of IUD rings and
Out-of-loop pregnancy plays a double insurance role.
How to observe the changes of cervical mucus?
To determine the ovulation period by cervical mucus observation, we must first determine the contraceptive object.
Conduct training guidance. It is generally beneficial to observe cervical mucus several times a day.
After getting up, before taking a bath or before urinating, take glue from the vaginal opening with your fingers.
Check the liquid, observe the appearance and viscosity of mucus on your fingers, and use your fingers.
Check the drawing reaction, etc. So after more than three menstrual cycles,
Through observation, we can master the law of cervical mucus secretion and ovulation period.
Once the vulva is found to be moist, the sticky mucus tends to become thinner.
When the mucus can be pulled to a few centimeters, it should be considered as pregnancy (ovulation)
It was not until the fourth day that the peak of thin, transparent and wiredrawn mucus appeared.
You can enter the safe period after ovulation.
The change of cervical mucus in vagina is influenced by many factors, such as the degree of vaginal stenosis.
Severe infection, vaginal irrigation, vaginal discharge during sexual excitement, and sticky after sexual intercourse.
Liquid, using vaginal spermicide, etc. Such as cervical mucus in vagina.
If the nature is uncertain, it's ovulation, don't take chances.
Using cervical mucus observation method for contraception, we must master the changes of cervical mucus.
It can only be used after the law changes.
What problems should be paid attention to when using safe period contraception?
Safe period contraception is a physiological contraceptive method with normal sexual life.
State, you can get satisfied sexy. But if you can't be strict
Improper mastery or use of lattice can easily lead to failure.
To use safe period contraception, we must first determine the ovulation period accurately. Currently used for
The three methods of determining ovulation period have their own advantages and disadvantages: they can be calculated by calendar method.
Ovulation period and safe period before and after ovulation. But it only applies to menstruation.
Regular women sometimes ovulate in advance or push because of environmental changes and emotional changes.
Late, so it is not accurate enough; Ovulation period can be determined by measuring basal body temperature.
There is also a safe period after ovulation, and the safe period before ovulation cannot be determined in advance.
Trouble and strictness. Not if you don't take your temperature according to the regulations.
Accurate determination of ovulation date; Observing cervical mucus can determine ovulation period and ovulation.
The safety period before ovulation and after ovulation is accurate, but users must experience it.
Training, completely mastered before use. If these three methods are combined.
If used, it can foster strengths and avoid weaknesses and achieve greater results.
At least one couple can master the method of determining ovulation period, if not,
If you can master this method, you can avoid contraception during the safe period.
Safe period contraception means stopping sexual intercourse during ovulation, which requires getting a man.
Party's close cooperation, otherwise can't use. Except, of course, during ovulation.
Birth control pills are also acceptable.