How many days after the menstrual period is the safe period?

Many female friends only know that having sex during the safe period is not easy to get pregnant, but do we all know? How exactly is the safe period calculated? I heard from some people that the safe period does not guarantee that pregnancy will not occur, so we should understand our own bodies so that we can avoid unnecessary trouble. Taking care of our bodies is what women should do. Next, let’s see how many days after the menstrual period is the safe period.

When is the safe period? What is “seven in front and eight in back”? The "first seven" and "last eight" are a method used to calculate the safe period. The "first seven" refers to the seven days before menstruation, and the "last eight" refers to the eight days starting from the first day of menstruation. It should be noted that "the last eight" does not refer to the eight days after the end of menstruation. If a woman starts menstruating on September 20 and ends on September 26, then the "first seven" refers to the seven days starting on September 13, and the "last eight" refers to the eight days before September 27. That is, the period from September 13 to September 27 is the woman's safe period.

However, the "seven before and eight after" of a woman's safe period should be determined according to the menstrual cycle. This method of calculating the safe period is generally suitable for women with a menstrual cycle of about 28 days and regular menstruation. If a woman's menstrual cycle is less than 26 days, generally speaking, the "first seven" can still be calculated as a safe period, but the "last eight" does not apply.

The safe period contraceptive method is a physiological contraceptive method. Sexual life is carried out under normal conditions and can achieve satisfactory results. However, if it is not strictly mastered or used improperly, it can easily lead to failure. According to statistics from relevant foreign experts, the failure rate of safe period contraception is as high as 14.4%-47%. This method is only suitable for people who have normal menstrual cycles, live together for a long time, and can correctly calculate the safe period.

The high failure rate of safe period contraception is mainly related to the following two factors:

1. Since the time of female ovulation is affected by factors such as the external environment, climate, one's own emotions, health status and physical condition, ovulation may be delayed or advanced, and extra ovulation may also occur, that is, ovulation twice in a month. This is one of the reasons for the high failure rate.

2. Since hormones in the body can also induce ovulation, when two people have sex, if they are particularly excited, it will increase hormone secretion, which may lead to ovulation. Therefore, this is also one of the important reasons leading to failure.

Nowadays, the pace of life in our society is relatively fast. Due to the pressure of life and work, many women will have inaccuracies. Early or delayed menstruation often occurs. Therefore, in this case, the safe period will be difficult to determine as the menstruation is inaccurate. Therefore, if you have sex during the safe period without taking contraceptive measures, you may get pregnant. Therefore, it is recommended that you take some contraceptive measures during the safe period to avoid unnecessary trouble.