Generally speaking, women are most likely to conceive when they have intercourse during ovulation. In women of childbearing age with regular menstrual cycles, the day of ovulation is usually about 14 days after the onset of menstruation, and a total of about 10 days before and after the day of ovulation is the ovulation period, during which intercourse is most likely to result in conception. If the ovulated egg is not fertilized within 24 hours, it will gradually deform and lose its ability to fertilize. Male sperm can maintain fertilization ability in the female reproductive tract for 2-3 days, so women who have intercourse 2-3 days before or within 24 hours after ovulation can increase their chances of conception. Usually, you can determine whether you are ovulating by observing the following points: vaginal discharge becomes thin and easily stretched; basal body temperature rises 0.3℃-0.5℃; ovulation test paper changes from strong positive to weak, etc. If the menstrual cycle is irregular and ovulation is irregular, you can go to the hospital to monitor ovulation by ultrasound and arrange the time of intercourse reasonably. Usually, a woman’s ovarian function peaks around the age of 25, and then starts to gradually weaken, and it is easiest to conceive at this age during ovulation.