A woman does not ovulate when she is pregnant. For a woman to ovulate normally, her estrogen and progesterone need to be in a relatively balanced state for her to be able to ovulate successfully. When a woman is pregnant, the growth of estrogen is relatively slow, progesterone increases significantly, and human chorionic gonadotropin increases. Under the influence of these hormones, follicle development is inhibited, and there cannot be mature follicles, and ovulation is not possible. Ovulation does not occur throughout pregnancy. Although the absence of ovulation during pregnancy does not lead to pregnancy, blind intercourse should not be performed in the early trimester and late trimester to avoid miscarriage and premature birth, which can cause serious harm to the woman’s body.