For most pregnant women, it takes about 6-7 days for the fertilized egg to come to term; the sperm survives for about 2-3 days and the egg survives for about 2-3 days after being expelled from the body. After intercourse, fertilization can occur within 3 days at the latest, otherwise there will be no fertilized egg formation and no pregnancy will occur. For couples who want to get pregnant, try to have sex during ovulation, because during ovulation, there is a clear discharge of eggs, and when you have sex in this case, the eggs and sperm will combine to form a fertilized egg, which will grow and develop in the uterine cavity to form an embryo.