Ovulation can occur in women just after menstruation, but the probability is relatively low. It is only when the estrogen in the body rises rapidly that the maturation of the follicles may be stimulated, thus eliminating the eggs, such as when taking a large amount of estrogen or when the ovaries are strongly stimulated by the outside world. Ovulation in women occurs about 14 days before the next menstrual period, which varies from person to person and is mainly regulated by estrogen in the body, because the ovaries are influenced by estrogen and can artificially promote the maturation of follicles. When you have just finished your period, your body’s estrogen level is relatively low, so there will be no follicle maturation, and you will not ovulate without additional supplementation. 7 days after the start of your menstrual cycle is a relatively safe period, and the probability of pregnancy is very low.