When is the safe period?

There are many contraceptive methods for women. They can take birth control pills or other methods to avoid pregnancy, but taking pills will have a certain impact on women's physical health. Many men and women believe that the safest way of contraception is to have sex during the woman's safe period. This way, women do not need to take medicine and men are more comfortable. But many women do not know how to calculate the safe period. So, when is the safe period?

Many women do not know how to calculate the safe period, nor do they know when the safe period is. There are many ways to calculate the safe period. The safe period can be calculated by calendar method, estimation method, basal body temperature method, etc. At this time, the chance of women getting pregnant is relatively low. By understanding the safe period, women can selectively plan when to get pregnant.

Calculation method

The method of calculating ovulation according to the menstrual cycle is also called the calendar method. Both menstruation and ovulation are affected by endocrine hormones from the pituitary gland and ovaries and show cyclical changes. The length of their cycles is the same, both occurring once a month, and ovulation occurs between two menstrual periods. Women's menstrual cycles vary in length, but the interval between ovulation and the start of the next menstruation is relatively fixed, usually around 14 days. Based on this relationship between ovulation and menstruation, the ovulation period can be calculated according to the menstrual cycle. The calculation method is to count from the first day of the next menstrual period, and count down 14 days or subtract 14 days to get the ovulation day. The ovulation day and the 5 days before and 4 days after the ovulation day are called the ovulation period. This is the theoretical basis of the rhythm method of contraception. 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.

To calculate the ovulation period using this method, you must first know the length of your menstrual cycle in order to calculate the start date of the next menstrual period and the ovulation period. Therefore, this method is only suitable for women with normal menstrual cycles. For women with irregular menstrual cycles, it is impossible to calculate the date of the next menstrual period. Therefore, it is impossible to calculate the ovulation day and ovulation period.

If women can correctly grasp the safe period, they can effectively prevent pregnancy and also get pregnant during the unsafe period. When is the safe period? Generally it is around the time of a woman's menstrual period, but women should also pay attention. Although the pregnancy rate during the safe period is relatively low, it is not absolute. There is a possibility of contraceptive failure, so it should not be taken lightly.