What are the safe periods for women?

When women enter puberty, they will have their periods every month. In each month, except for the menstrual period and ovulation period, the rest of the time is a safe period. Women's safe period is divided into safe period before ovulation and safe period after ovulation. The safe period for women is the best time to take contraceptive measures. However, one should not let down one's guard as pregnancy is also a possibility during the safe period. Therefore, certain contraceptive measures must be taken during the safe period.

What are the safe periods for women?

The safe period refers to a contraceptive measure that calculates the ovulation period according to various calculation methods and terminates sexual intercourse during the ovulation period. It is normal for women's menstrual cycle to be between 26 and 35 days, and many women will ovulate early or late, at which time the judgment of the safe period will immediately become invalid. Common safe period calculation methods include calendar method, ovulation temperature measurement method, female secretion observation, ovulation detector detection method, etc. Only by combining the above safe period calculation methods can the actual effect of contraceptive measures be effectively improved.

The safe period refers to the 1st to 7th day of the menstrual cycle and the last 4-5 days of the cycle. During this period, ovulation has not occurred or the egg has died, so even if the ovulation time changes, it is still a relatively safe period. From the perspective of contraceptive measures, they divide a menstrual cycle into three time periods: the absolute safe period, the safe period and the safe period.

Assuming a menstrual cycle (from the first day of almost menstruation to the first day of the next menstruation) is 28 days, the ovulation period is around the 14th day. The 3-5 days before and after the ovulation period is the fertile period, which is the safe period for contraception; days 1-7 and the last 4-5 days of the cycle are not ovulated or the egg has died, which is a relatively safe period; the rest of the day is a relatively safe period, because the ovulation period may be advanced or delayed by many factors for a few days, so it is called relatively safe.

When is the safe period?

The method of calculating ovulation according to the menstrual cycle is also called the calendar method. Both menstruation and ovulation are affected by the endocrine hormones of the hypothalamus, pituitary gland and uterus and ovaries and show regular changes. The length of their cycles is the same, both are one cycle per month, and ovulation occurs in the middle of two menstruations. Women's menstrual cycles vary in length, but the time interval between ovulation and the start of the next menstrual period is relatively fixed, usually about 14 days. Based on the relationship between ovulation and menstruation, the ovulation period can be calculated according to the physiological cycle. The calculation method is to start from the first day of the next menarche, and the last 14 days or minus 14 days is the ovulation period. The ovulation period plus the first 5 days and the last 4 days are called the ovulation period. This is the basic 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 period. The ovulation period, the 5 days before and the 4 days after, 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. During the safe period, there is no need to use any contraceptive drugs or contraceptive tools.