A woman has the best chance of getting pregnant when she has sex around the time of ovulation, if her period came on the 27th of the previous month, she has the best chance of getting pregnant around the 11th of the next month. A woman’s optimal menstrual cycle is 28 days, and ovulation occurs in the middle of two periods, 14 days before the next period, when the egg cell is discharged from the ovary, is active, and can usually remain in the reproductive tract for up to three days. If you want to get pregnant, you need sperm and egg cells to come into contact, so you have the best chance of getting pregnant when you have sex around the 11th of the following month. After a woman has sex during ovulation, when she notices symptoms such as delayed menstruation and breast tenderness, it means there is a possibility of pregnancy, which can be monitored with a pregnancy test. Then, go to the hospital for blood HCG measurement to determine whether the pregnancy status is normal or not.