How long does it usually take to menstruate after childbirth?

Postpartum how long to menstruation according to the situation of lactation, the time to restore menstruation has early and late, lactation by the influence of prolactin secretion, generally will not menstruation, because prolactin will inhibit menstrual cramps, generally stop breastfeeding soon after menstruation, need nursing women generally postpartum about 6 months to menstruation.