After giving birth to a baby, the time of menstruation is not certain, the next month or a few months to about a year may come to menstruation, are normal. 1. The next month after giving birth: some women do not breastfeed after giving birth, in this case the woman’s body hormone levels recover faster, it is possible that the next month to menstruation. 2. several months to a year or so to menstruation: women breastfeeding after childbirth, due to the body’s secretion of lactogen is higher, so, menstruation may come later, several months to a year or so to menstruation are possible, it should be noted that, do not come during the period of menstruation is not equal to the non-ovulation, post-partum women have sex must take contraceptive measures to avoid unwanted pregnancies. After giving birth to a baby, if the menstrual period is abnormal, you need to consult a doctor to find out the cause, so as not to delay the condition.