The exact timing of the return of menstruation varies from person to person, depending on the woman’s physical condition, whether she is breastfeeding or not, the length of time she has been breastfeeding, her age, and the degree of recovery of her ovarian function. Without breastfeeding, menstruation usually resumes about 6-10 weeks after delivery. If you are breastfeeding after delivery, the time for menstruation to resume varies. Most women who are breastfeeding will recover in about 6 months. During the breastfeeding period, women produce a lot of lactogen, which can inhibit ovulation, and if the ovaries do not ovulate, no menstruation will occur. However, if breastfeeding is not enough or mixed breastfeeding, the level of lactogen in women’s body is unstable, which can lead to the recovery of ovarian function is not easy to determine, it is possible to resume ovulation early, and the time of menstruation recovery may be earlier. It is recommended that the mother should not worry too much and just put herself in the right frame of mind, or be cautious and go to the hospital for a medical checkup for any abnormalities.