Lactational amenorrhea is a kind of temporary postnatal infertility that occurs when a woman is not menstruating and fully breastfeeding upto a maximum of
Six months
Amenorrhea essentially means lack of menstrual cycles. This is based on the principle that women are not fertile, that is they do not ovulate or have menstrual cycles for six months after childbirth or parturition when they are actively breastfeeding. This makes lactational amenorrhea a natural method of contraception.