The vagina is weakly acidic and has a certain self-cleaning function. After the sperm enters a woman’s body without conception, the sperm will die due to the acidic environment and will be expelled through leukorrhea or menstruation. In most cases, women have a higher chance of conceiving during ovulation. For families who have plans to have children, they can have intercourse during this time; for those who have difficulty conceiving, they can go to the hospital to calculate the ovulation period and then find an appropriate time for the couple to have intercourse in order to improve their chances of conception. In the process of pregnancy preparation, couples do not need to have too much psychological pressure, basically it is better to let nature take its course.