Under normal circumstances, the sperm injected into the vagina can survive for 2-3 days in the woman’s body, so the sperm within 2-3 days after intercourse have the ability to fertilize. If you are planning to get pregnant, it is recommended that you have intercourse during the ovulation period. Sperm enters the vagina and reaches the uterine cavity and fallopian tubes, where it waits for the egg, and after ovulation, the sperm and the egg will combine to form a fertilized egg, but if the time is too long, the sperm will die naturally. So if you are planning to get pregnant, you must calculate the time of ovulation, and then schedule your sex life reasonably during the ovulation period, so that you can improve your chances of getting pregnant. In addition, it is recommended that both husband and wife should strengthen their nutrition when planning to get pregnant, stay away from smoking and alcohol, and take oral folic acid tablets before getting pregnant.