The following are some of the precautions to be taken after intercourse: 1. After intercourse during ovulation, strenuous exercise is generally forbidden, but appropriate exercise can be done to strengthen the body’s resistance and prevent colds. 2. Do not take drugs indiscriminately during this period, you can take oral folic acid to prevent fetal neural tube abnormalities. 3. If you have a spicy, stimulating and oily food, try to eat less or not. If menopause exceeds 40 days, ultrasound examination and blood HCG and progesterone tests can be performed to understand the size of the gestational sac, the location of implantation and the development of the embryo to exclude ectopic pregnancy.