From a fertility perspective, there are two aspects to consider when evaluating sexual activity. From a female perspective, women are more likely to conceive 3-5 days before and after the day of ovulation. In the male perspective, the sperm reaches the female vaginal environment for 10 hours or 24-72 hours to conceive. Usually, a woman’s ability to conceive is highest during ovulation. Generally, ovulation is determined simply by the timing of a woman’s menstruation, i.e., 2 weeks before her menstrual period, which is the day of ovulation, so 3-5 days before and after the day of ovulation are ideal for conception. From the male partner’s point of view, once the sperm have completed their ejaculation and reached the vaginal environment of the woman, there is no problem for the sperm to maintain high viability for 10 hours at the right temperature, humidity and pH level. Therefore, during the ovulation stage of the woman, the man and the woman can have sex together once a day and have a high quality sex life to maintain the ability of the sperm to continue to cause pregnancy and to ensure that the woman is at the best stage of conception to complete such an act, thus increasing the probability and chances of fertility. In daily life, it is important to pay attention to personal hygiene and cleanliness before and after intercourse during pregnancy preparation. In addition, it is important to regulate your mood and not to be too anxious, but to let nature take its course. Also, you can take an early pregnancy test about 10 days after intercourse to detect whether you are pregnant.