Level 1: Can I get pregnant while breastfeeding? During breastfeeding, due to changes in maternal hormone levels, the menstrual cycle will be affected, but pregnancy will not occur during breastfeeding. In fact, ovulation may also occur during breastfeeding, and ovulation is one of the prerequisites for pregnancy. Level 2: Contraceptive methods during breastfeeding In order to avoid unwanted pregnancy during breastfeeding, mothers need to choose a contraceptive method that suits them. Generally speaking, common contraceptive methods include oral contraceptive pills, IUDs, contraceptive patches, etc. But before choosing a contraceptive method, you need to consult your doctor and