How long it takes for menstruation to return varies from person to person, with non-breastfeeding mothers experiencing menstruation about 6-8 weeks after delivery and breastfeeding mothers resuming menstruation in most cases around 6 months after delivery, although the timing is not certain. The recovery time of menstruation after delivery is closely related to whether or not you are breastfeeding and your nutritional status. First of all, in general, a woman’s uterus basically recovers around 42 days after delivery, and the hormones secreted by the hypothalamus-pituitary gland-ovary have returned to normal. If she is not breastfeeding, the ovaries begin to have new follicles to grow, develop and mature, and ovulation occurs, and menstruation will occur 2 weeks after ovulation. However, breastfeeding mothers, lactation hormone levels in the body during lactation is higher, can inhibit ovarian ovulation, different women with different degrees of breast milk, the body lactin levels are different, so that menstruation in the breastfeeding period to resume the time is not the same. Generally, menstruation will return after six months of breastfeeding. The better the nutritional status of the mother, the faster the uterus recovers and the earlier the menstruation will start.