New life must be conceived by combining the male sperm with the female egg, and the moment of this union can be timed. Generally speaking, women are most likely to conceive in the two or three days before and after ovulation. In a woman with a 28-day menstrual cycle, ovulation occurs on the 14th day of the menstrual cycle (counting from the first day of menstruation). Therefore, the period from day 11 to day 15 of the menstrual cycle should be the period when conception is possible, with days 13 and 14 being the most likely. If the menstrual cycle is 30 or 32 days long, ovulation occurs on the 16th or 18th day of the menstrual cycle. However, this simple method is not suitable for women with irregular menstrual cycles. However, there are other ways to observe it. Commonly used to help understand the date of ovulation is through the basal body temperature and vaginal discharge changes in the menstrual cycle (see related topics). According to scientific experiments, it has been proved that within 12 hours after the egg is discharged from the ovary, the fertilizing ability is the strongest, within 15-18 hours there is still the ability to fertilize, and after 24 hours the ability to fertilize is lost. According to the normal situation, each time a man ejaculates sperm during sexual intercourse, hundreds of millions of sperm can enter the vagina, but the actual sperm that can reach the fertilization site is only about 200 sperm, and most of the rest of the sperm in the process of passing through the female reproductive tract died. It is generally believed that the sperm that can reach the fertilization site within 1-3 days after sexual intercourse has the ability to fertilize the egg. Therefore, sex 1-2 days before ovulation is the most fertile time. If you want to have a baby, don’t miss this great opportunity.