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Is safe period contraceptive reliable? Is safe period pregnant probability high

For many young couples, they like to have sex in a safe period, which is safe and comfortable. Many female friends think that it is possible to use contraception in the safe period. In fact, the so-called safe period is not necessarily safe, but the probability of pregnancy is relatively small. So how is the safe period calculated? Is the safe period reliable?

1. How many days are women safe

If you live in an absolutely safe period, it is almost impossible to conceive, unless there is a very special situation, i.e. there are two or more ovulations in a cycle; while in a relatively safe period, the probability of contraceptive failure is higher. Many people think that safe period contraception will not affect the pleasure of sharing a room, but also very convenient, so many young women are keen to use this contraception, and many women who have just given birth rely on calculating safe period to contraception.

From the theoretical point of view, according to the female ovulation period and sperm, egg survival time in the female reproductive tract, infer a period of time without pregnancy, it can achieve the purpose of contraception. In general, except for ovulation, the rest of the menstrual cycle is called a safe period. However, women's ovulation may be affected by many factors, such as external environment, climate, their emotions, and health status, which may advance or postpone for several days. Therefore, the safety period is divided into absolute period and relative period.

Suppose a menstrual cycle (from the first day of menstruation to the first day of the next menstruation) is 28 days, ovulation is about the 14th day, the 3-5 days before and after ovulation is the period of easy conception, for contraception is the period of danger; the 1-7 days, as well as the last 4-5 days of the cycle, is the period of no ovulation or the egg has died, which belongs to the absolute safety period; The rest of the day is a relatively safe period, because ovulation may be affected by many factors in advance or a few days later, so it is called a relatively safe period.

The safety period is not the absolute safety that people imagine, but a relatively speaking range. Therefore, the editor reminds the readers not to think that they can do what they want in the safety period, but also to take good safety measures to avoid being recruited.

2. Is contraception safe in a safe period

The ovulation date of a woman is generally about 14 days before the next menstruation. After the egg is discharged from the ovary, it can survive for 1-2 days in the fallopian tube to wait for fertilization; the sperm of men can maintain the ability of fertilization for 2-3 days in the female reproductive tract, so it is easy to conceive in the same room before and after the egg is discharged.

For the sake of insurance, we will ovulate 5 days before and 4 days after, together with ovulation day, a total of 10 days is called ovulation period. Because in the ovulation period is easy to conceive, so ovulation period is also known as easy to conceive or dangerous period.

The period is divided into pre ovulation safety period and post ovulation safety period. The period from the clean day of menstruation to the day before ovulation is the safe period before ovulation. From the first day after ovulation to the day before the next menstruation, it is a safe period after ovulation. The safe period after ovulation is safer than that before ovulation.

This is because some women are sometimes affected by environmental changes and emotional fluctuations to advance ovulation, so that the safe period before ovulation will be shortened, and they do not know, so that the safe period before ovulation is not safe. In a menstrual cycle, there is little chance for the ovaries to ovulate twice in succession, that is to say, there will be no second ovulation between the time after ovulation and the time before the next menstrual tide. Therefore, the safe period after ovulation is relatively safe.

The key to using safe period contraception is to measure the ovulation date of women. When ovulating, there is no special feeling. Even though some women may have symptoms such as lower abdominal pain, low back acid, breast swelling and emotional changes, these phenomena are not the specific symptoms of ovulation, so they cannot be used as the basis for ovulation.

Menstruation and ovulation are cyclical changes, and there is a close relationship between them. If we master the law of the two changes, we can measure the ovulation date indirectly. There are many ways to measure the date of ovulation, and the methods that women can master by themselves are: calculating according to menstrual cycle, measuring basic body temperature and observing cervical mucus secretion, etc.

Using calendar method is easy to fail. Because some women sometimes delay or advance ovulation due to health conditions, environmental changes and emotional fluctuations, the ovulation period calculated by menstrual cycle is not correct.

According to foreign statistics, the failure rate of calendar method is 14.4% - 47%. Therefore, this method is only suitable for people who have normal menstrual cycle, live together for a long time, and can correctly master the calculation of safety period. It is not reliable to use this method for irregular menstrual cycle, visiting couples and women with changed living environment.

Many female friends are very concerned about the safe period, because many female friends do not want to be pregnant so early, so they attach great importance to the safe period, but the so-called safe period is just a small probability of pregnancy, and it is not completely unable to be pregnant, so rather than calculating the safe period, it is better to do a good job in contraceptive work, so that it will be really safe and reliable.