Please help calculate the absolute safety period of 10

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.

Very simple! The security period is divided into an absolute security period and a relative safety period. I'm just going to tell you about the absolute safe period!

According to what you said, August 30th, here you did not say when you ended (the end means that there is no blood at all). Assuming you end on September 6th, then, here's the point, September two days are absolutely safe. If you push forward, August is also perfectly safe.

From a medical point of view, two days before and after menstruation is an absolutely safe period!

The absolute safe period is defined as the 1st to 7th days of the menstrual cycle and the last 4-5 days of the cycle.

The whole menstrual cycle is a safe period outside the ovulation period, but a woman's ovulation will be affected by various factors such as the outside world, the environment, climate, her emotions, and her health status, which may be advanced or postponed by a few days, so the safe period is divided into an absolute safe period and a relative safe period.

Assuming that the menstrual cycle is 28 days, ovulation is about the 40th day, 3-5 days before and after ovulation is the pregnancy period, which is a dangerous period for contraception, and on the 1st to 7th day of the menstrual cycle, and the last 5-10 days of the menstrual cycle are not ovulated, or the egg has died, this period is the absolute safe period.

Overview: The absolute safe period refers to the 1st to 7th day of the menstrual cycle, and this period is the period when the ovulation is not or the egg has died, so even if the ovulation day and the rising period change, it is still an absolutely safe day.

From the perspective of contraception, they divide the menstrual cycle into three periods: the absolute safety period, the safe period and the danger period.

It's absolutely safe before the menstrual period is over.

According to the time of your menstruation, and then subtract, the time for the egg to survive is the safe period, generally the first few days of your period are the safe period, because at this time the egg has been eliminated and the egg survival period has passed.