Monthly or seasonal cycle in the direction of the Fertile time and Safe time

Average monthly menstruation cycle, (14 days) lutinaijing hormone (LH) discharge in 36-38 hours ovary (Ovum) is emitted. This 36 hours after the appropriate number of sperm cells in the ovary, but a child can be combined with. The egg cell is alive, around 36 hours in the life of egg cells from a total of 72 hours or three times. The sex of the egg in the uterus after sperm duct cells (spermatorza) who may have a maximum of 72 hours. 28-day menstrual cycle, mid-season total of 120 hours (5 days) is the fertile time - this time the sex of the child may be born. 14 days of her menstrual ovary is approximately 2-3 days before and 2-3 days after this fertile time. I do not want to take the children, they also need to know that the ovary emissions (ovalution) rough day. More so with the before and after of the day will be added to the well. It is the 9th day of menstrual cycle, the seasons and the 20th in the time after the car is considered a fairly safe time. This is the time when the sex of the child, which could run the risk of not pregnant, because this is the time of ovary. It also found that although rare, menstrual cycle, and that day (the day of the so-called safe with that) just may be one of the rare times sexual Disuse pregnant women in the menstrual cycle can always vent ovary. So, this time as a so-called safe to say no, but it's the exception. In general, the 9th day before and the day 20 in the next period of time is safe and 9th - the day in between 20 refer fertile time is considered, from the twelfth to the sixteenth (13 th to the 17 th dispute) of the fertile time of the day.