It is best to rest in bed for an hour after intercourse to improve the chances of pregnancy. If you stand up, go to the bathroom to urinate or wash your vulva immediately after intercourse, it is likely to cause a large amount of semen to flow out, which will reduce the chances of pregnancy by about 50%. If you plan to get pregnant, you should calculate the time of ovulation and then project the ovulation period according to the time of ovulation, and arrange sex reasonably during the ovulation period to have a chance of pregnancy. It is also recommended to do the corresponding examination before getting pregnant. If the uterus is in retroflexion and posterior tilting position, it is recommended to rest on the bed for one hour after intercourse.