How many days before menstruation is the safe period?

Many female friends do not like to take some contraceptive methods during sex, so sometimes they choose to have sex during the safe period. However, some people do not know how many days before the period is the safe period. So today, let us ask an authoritative expert to explain to us how many days before the period is the safe period.

A woman's ovulation date is generally about 14 days before the next menstrual period. Starting from the first day of the next menstrual period, counting down 14 days or subtracting 14 days is the ovulation day. The ovulation day and the 5 days before and 4 days after the ovulation day are called the ovulation period. For example, a woman's menstrual cycle is 28 days, and the first day of this menstruation is December 2nd. Then the next menstruation will be on December 30th (December 2nd plus 28 days). Subtract 14 days from December 30th, and December 16th is the ovulation day. The ovulation day and the 5 days before and 4 days after it, that is, December 11-20, is the ovulation period. Except for the menstrual period and ovulation period, the rest of the time is the safe period. There is no need to use any contraceptive drugs or tools during sexual intercourse during the safe period. The safe period calendar varies greatly due to individual physical variations.

There is a saying in Hong Kong and Taiwan films that "seven before and eight after", but it is not accurate. Taking into account the survival time of sperm in the female body as well as error factors such as environment and emotions, the period between 5 days before ovulation and 4 days after ovulation is generally called the "dangerous period". The possibility of pregnancy during this period is relatively high. The rest of the time becomes the "safe period" and it is relatively difficult to get pregnant. Therefore, the calculation of the safe period varies from person to person and from one menstrual cycle to another. The safe period does not mean that you cannot get pregnant, but the possibility of pregnancy is smaller. The safe period algorithm also has limitations. For example, if a woman has irregular menstruation, it is not suitable to use the safe period for contraception. In addition, women may also have irregular ovulation due to emotional changes.

The above is the article about how many days before menstruation is the safe period. I hope that after reading the above article, you can have a comprehensive understanding of how many days before menstruation is the safe period. During menstruation, female friends should also pay more attention to rest and diet.