Women of normal childbearing age ovulate, and after sex, the egg and sperm successfully combine, find a suitable place in the uterus and implant, and begin the course of life. Countless sperm are produced during each sexual life, and the egg generally only ovulates once per menstrual cycle, so not every sexual life will produce life. Every menstrual cycle has a safe period. The chance of pregnancy during the safe period is greatly reduced, so what is the safe period? How is the security period calculated? What is the safe period? There is a time zone during the safe period, it is safer to have sex during this time period, the probability of female ovulation in this time period is extremely low, and if the woman does not ovulate, the egg and sperm will not combine to form a fertilized egg, and will not become pregnant, so the time period for sex without ovulation in this time period is called the safe period. How is the security period calculated? Safe periods are related to ovulation a...