During pregnancy preparation, you can still have intercourse after ovulation, but we do not advocate frequent sex during pregnancy preparation, because frequent sex not only does not increase the chance of pregnancy, but also affects the quantity and quality of sperm, thus reducing the chance of pregnancy. During pregnancy preparation, we can monitor ovulation to guide our sex life and improve the success rate of conception. There are two ways to monitor ovulation: ovulation test paper and ultrasound monitoring. Ultrasound ovulation monitoring is more accurate than ovulation test paper. During the ovulation period, you should not have intercourse every day, you can have intercourse every other day to improve the success rate of conception. During the preparation period, we should not only guide our sex life scientifically, but also maintain a regular life, be happy, don’t stay up late, keep a good state of mind, don’t put yourself under a lot of pressure, and relax. And pay attention to folic acid supplementation, which can effectively reduce the chance of fetal neural tube malformation.