How many days after the menstrual period is the safe period

Each menstrual cycle of a woman is divided into menstrual period, ovulation period and safe period. Distinguishing these time periods is helpful for contraception and pregnancy preparation. However, many netizens are not quite clear whether the period just after menstruation is a safe period, and how to calculate the safe period of menstruation. The 7 days before menstruation and the 8 days after menstruation are the safe period. How this safe period is calculated will be explained in detail below.

The number of days after menstruation that are considered safe can be calculated using the calendar method, the basal body temperature method, and the secretion observation method. Of course, the safe period is not absolutely safe. Sometimes women ovulate earlier or later, and the judgment of the safe period becomes invalid at this time.

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. Contraception during the safe period can also be affected by factors such as mood, climate, and environment, which may result in early ovulation, delayed ovulation, or even extra ovulation. Therefore, contraception during the safe period is not absolutely safe.