Under normal circumstances, intercourse on and around the day of ovulation is most likely to result in pregnancy. If a woman has regular menstruation, ovulation usually occurs about 14 days before her next menstrual period. The ovum usually survives in the body for about 24 hours, during which time it will begin to deform gradually and lose its ability to fertilize if it is not fertilized. A man’s sperm can normally remain in the woman’s reproductive tract for 2-3 days, so having intercourse 2-3 days before or within 24 hours after ovulation can increase the chances of conception, with a very high rate of conception within 12 hours after ovulation. You can also schedule intercourse by monitoring and observing ovulation, such as ultrasound, using ovulation test strips and measuring basal body temperature. Generally speaking, a woman’s ovaries are at their peak of maturity around the age of 25, making it the easiest time to get pregnant.