A woman’s ovulation day is usually about 14 days before the next menstrual period, and it is easy to conceive if you have intercourse before or after the ovulation period. Women with reproductive requirements, regular menstruation, ovulation occurs about 14 days before the next menstrual period, and the egg can survive in the body after discharge for 2-3 days, and in the 4 days before and 5 days after the day of ovulation are ovulation, so the chance of conception in the ovulation period of coitus is relatively large, you can be guided by the doctor under the guidance of the projected ovulation period to guide the coitus. When the menstrual cycle is irregular, you can project the ovulation period through ultrasound monitoring of follicular development, calendar method, basal body temperature monitoring method and so on under the guidance of your doctor to improve the chance of conception. A blood HCG (human chorionic gonadotropin) level test can be performed as early as about 10 days after ovulation to determine pregnancy.