Women in their fertile years have the highest chance of getting pregnant when they have intercourse during ovulation, but there is no exact figure on the chance of pregnancy, because conception is associated with many factors, such as the normal development of the female reproductive system, the ability to ovulate normally, the smoothness of the fallopian tubes, the quality and motility of male sperm, and many other factors. If you have intercourse during ovulation, the chances of pregnancy will be more than 90% if the man and woman are healthy and all factors that may cause infertility are excluded. If you have intercourse during the safe period, when the ovaries do not ovulate unexpectedly, the woman’s chances of pregnancy are zero. If the ovum is expelled early or late during the safe period, having normal sexual intercourse can also lead to pregnancy, with a chance of about 20%. Therefore, it is best to choose to have intercourse during ovulation if you have a desire to get pregnant, and if you have no plans to get pregnant, you should take effective contraceptive measures.