Breastfeeding is still possible after menstruation, and menstruation does not affect milk production. If a woman breastfeeds after giving birth, her ovaries will resume ovulation 4 to 6 months after delivery and her period will return. After menstruation returns, breastfeeding can continue and there is no adverse effect on the mother or baby. However, if you plan to continue breastfeeding now that your period has returned, you must take effective contraceptive measures, such as using condoms or placing a birth control ring in the uterine cavity. This is because if you have an unplanned pregnancy during breastfeeding, it may lead to a decrease in milk production due to the elevated level of estrogen in your body.