If menstruation occurs just after the first month, it may also be an abnormal phenomenon, mainly because after giving birth to a baby, if it is a normal delivery, the physiological recovery period is 56 days, even if there is no breastfeeding, the body’s other hormone levels have not yet reached normal within 56 days, and the ovaries have not yet begun to secrete estrogen and progesterone cyclically, so basically, you will not have menstruation. If vaginal bleeding occurs at just over 1 month, it is important to distinguish whether it is menstruation or abnormal vaginal bleeding. If it occurs in a non-menstrual state, it may be due to poor uterine recovery, or there are residual tissues in the uterus, or there is an infection in the uterine cavity that leads to vaginal bleeding, which should be taken seriously, and go to the hospital as soon as possible for the appropriate examination, and deal with it promptly if there is any problem.