Pregnancy requires sex during a woman’s ovulation period, but there is no such thing as the best time to have sex. The process of pregnancy requires the union of sperm and egg cells. During a woman’s ovulation period, egg cells are released from the ovaries and stored in the fallopian tubes, where they can remain for 12 to 24 hours, and sex at this time is the best time for conception, regardless of the time of day. Whether or not it can develop into a healthy embryo is related to the quality of the egg cell and sperm, and has nothing to do with the specific points. If you need to prepare for pregnancy, it is recommended that you go to the hospital in time, complete the relevant examinations under the guidance of the doctor, and carry out scientific and reasonable preparation for pregnancy to promote the birth of a healthy baby. Folic acid can be supplemented appropriately when preparing for pregnancy as well as 3 months before conception, in order to promote the development of the fetal nervous system.