How to calculate the safe period, if there is still a little bit of menstruation, how can it be cons

The safe period is calculated from the first day of menstruation, not from the cleanness of menstruation. Menstruation is clean and a little bit can ml.

The short-answer algorithm, the first seven and the last eight, is calculated from the first day of menstruation and adapts to cycles of more than 28 days (from the first day of menstruation to the day before the next menstrual period). For example, this month is the 20th menstrual period, 20 27 is the safe period, and the latter ones are resolutely not used, and the risk of delaying one day will increase rapidly. It doesn't matter which day is clean.

There is also a period of time when the next menstrual period is pushed by the longest cycle, the longest cycle is 30 days, the next menstrual period is July 27th, and July 20th and 27th are the safe periods. As long as every menstrual period is earlier than expected, this algorithm is safe.

The principle is that 7 days before and after ovulation is the danger period, a total of 14 days, avoid or take measures, and the other time the menstrual period is removed 5 days. The cycle of 19 days is the number of days of the individual's safety period. There are 9 days in the 28-day cycle, 2 days after the menstrual period is clean and 7 days before the next menstrual period; Seven of the 26-day cycles are seven days before the next menstrual period.

People who have just gotten married are highly excited and are not suitable for safe period contraception.

Hello, according to your description, first of all, if the menstrual cycle is more regular, then 9 days before menstruation and 4 days after menstruation belong to the safe period.

Generally speaking, the safe period refers to the seven days before and eight days after menstruation, but this is only relative and not absolute.

According to the first seven and the last eight, the normal cycle is 28 to 35 days.

You check on the Internet, no one can calculate this, even if it is calculated, it is wrong, you can check it on the Internet, communicate with experts to see how to calculate.

Attention!! The safe period does not start on the day of the end of menstruation, but from the first day of menstruation.

The little thing that affects is not the safe period, but the sex life.

Menstruation is a matter of the uterus, and the process of endometrial shedding and repair varies from person to person.

Ovulation is a matter of the ovaries, starting the next ovulation from the first day of menstruation.

The cycle is from the first day of menstruation to the day before the next menstrual period.

The ovulation day of the 28-day cycle is on the 14th day, the ovulation day of the 26-day cycle is on the 12th day, and the ovulation day of the 31-day cycle is on the 17th day.

If it takes 5 days for menstruation to be clean, the 8th day after menstruation is the 13th day of the cycle, and if it is a 28-day cycle, ovulation occurs after 1 day, do you think it is safe?

Women's menstrual cycles can be long and short, but the interval between the day of ovulation and the start of the next menstrual period is relatively fixed, usually around 14 days. The calculation method is calculated from the first day of the next menstrual period, and the 14 days backward or subtracted 14 days is the ovulation day, and the ovulation day and the first 5 days and the last 4 days together are called ovulation. For example, if a woman's menstrual cycle is 28 days, and the first day of this menstrual period is on December 2, then the next menstrual period will be on December 30 (December 2 plus 28 days), and then subtract 14 days from December 30, then December 16 is the day of ovulation.

Ovulation is the day of ovulation and the 5 days before and 4 days after, that is, from December 11 to 20.

In addition, in the menstrual cycle, except for the menstrual period and ovulation period, the rest of the time is the safe period, so in the menstrual cycle, there is a pre-ovulation safe period and a post-ovulation safe period. In fact, this is also the theoretical basis of the rhythm contraceptive method. However, to calculate the ovulation period with this method, we must first know the length of the menstrual cycle, so as to calculate the accurate time of the next menstrual cramp, and then to calculate the ovulation period, so this method can only be applied to women who have always had a normal menstrual cycle.

For women with irregular menstrual cycles, it is impossible to calculate the date of the next menstrual period. Therefore, it is not possible to calculate the date and period of ovulation.

Problem Analysis: Ovulation; Counting from the first day of the next menstrual period, the 14 days backward or subtracted from 14 days is the ovulation day, and the ovulation day and the 5 days before and 4 days after it are added together is called ovulation. Your ovulation is between the 12th and the 21st.

Advice: The rest of the cycle except the menstrual period and ovulation period is the safe period.