Many women actually make use of breastfeeding as a natural method of contraception until they start weaning their babies. This method can be successful. However, in some cases, regular menstruation can start before weaning begins.
While it cannot be predicted when your menstrual cycle will return after delivering your baby, you can still avoid becoming pregnant by making use of contraception like condoms. In some cases, you can still become pregnant while breastfeeding. If this happens, there are distinct signs of pregnancy while breastfeeding that you will experience.