Breastfeeding is usually in the postpartum 4-6 months will come to menstruation, come to menstruation sooner or later at the same time is also related to the woman’s nutrition and their own physical recovery. After giving birth, the release of prolactin may inhibit the endocrine function of the ovaries, so that the level of hormones secreted by the ovaries decreases, so the endometrium will not undergo cyclic changes, which will lead to amenorrhea. With the nutritional replenishment of the body after giving birth, the level of hormones secreted by the ovaries will also gradually turn to normal. However, during amenorrhea, although there will be no menstruation every month, the ovaries will occasionally ovulate, and if you have a normal sex life, you should also pay attention to take contraceptive measures, such as a penis condom or placing an intrauterine device to avoid unwanted pregnancies.