The safe period is a few days before the menstrual period

Generally speaking, girls have their periods every month. Periods are very important to women, and there are certain symptoms before the period. There are a few days before the period that are considered a safe period. If women have sex during this period, they will not get pregnant. However, many people do not know the exact time. So, how many days before the period are considered a safe period?

Ovulation occurs about 14 days before the next menstrual period. The ovulation period, which includes the ovulation day, the 5 days before and the 4 days after, is about 10 days in total. Except for the menstrual period and ovulation period, the rest of the time is the safe period. The ovulation period is the dangerous period, so to calculate the safe period, you must first determine your ovulation period.

Commonly used methods for calculating ovulation period include menstrual cycle calculation method, ovulation test paper test method, basal body temperature measurement method and vaginal secretion observation method. With the help of the above methods, you can calculate the ovulation period and thus know your safe period.

The safe period is divided into the safe period before ovulation and the safe period after ovulation. From the end of menstruation to the day before ovulation is the safe period before ovulation. From the first day after the end of ovulation to the day before the next menstrual cramps is the safe period after ovulation. The safe period after ovulation is safer than the safe period before ovulation, but the safe period is not absolutely safe, because the female ovulation time is affected by environmental changes and mood swings, ovulation can be delayed or advanced, and even extra ovulation may occur.

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.

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