If you want to have a baby while breastfeeding, you need to decide whether to continue the pregnancy based on whether it was previously a normal delivery. If the birth was normal, the pregnancy can continue. If the birth was by cesarean section, the pregnancy should be considered after two years. This is because pregnancy may occur unexpectedly during breastfeeding when the uterine wounds have not fully healed at the time of delivery. If the child is not wanted, abortion may be considered. It is important to note that women who are breastfeeding need to temporarily stop breastfeeding if they are using medication for abortion so that the medication does not affect the baby through the breast milk. In addition, the uterus is less sensitive to contraction during breastfeeding, so you should observe the bleeding after the abortion and seek medical attention if there is a lot of bleeding. Breastfeeding women should be aware that menstruation usually resumes 6-10 weeks after delivery in women who are not breastfeeding, and ovulation will resume about 10 weeks after delivery. In breastfeeding women, the return of menstruation is delayed, and on average, ovulation resumes 4-6 months after delivery. However, lactating mothers can mostly experience ovulation before their first menstrual period resumes, and thus still have the possibility of conceiving before their periods come back. At this time, if a woman is not planning a pregnancy, she should take good contraceptive measures to avoid unwanted pregnancy.