Normally a woman will not get pregnant if she has intercourse on the third day after ovulation because the egg will die naturally without sperm binding it within 24-48 hours after it is discharged and loses its ability to fertilize. If a woman’s ovulation date is based on her menstrual cycle, and she does not use ultrasound or ovulation test strips to monitor her ovulation, and cannot accurately estimate the time of ovulation, she may also become pregnant. Because a woman’s ovulation day is affected by a variety of factors, such as fatigue, mental stress and so on, there may be a delay in ovulation. If a woman’s ovulation is delayed, it is possible to get pregnant by having intercourse on the third day after the day of ovulation calculated according to the time of menstruation. If a woman wants to get pregnant, it is recommended to have intercourse on the next day of ovulation to increase the chances of getting pregnant, and if you do not intend to get pregnant, no matter what time of the day you have intercourse, be sure to do a good job of contraception.