If you become pregnant again while breastfeeding, it is not recommended to continue breastfeeding after pregnancy. Because breastfeeding can stimulate the nerve reflexes and induce uterine contractions, if you continue to insist on breastfeeding in early pregnancy, there is a risk that the nipples will be stimulated during breastfeeding, leading to the secretion of endogenous oxytocin, which will induce uterine contractions, and even the risk of preterm miscarriage and miscarriage. In addition to changes in hormone levels after pregnancy, breastfeeding pregnant women, breast milk will gradually disappear, the mammary glands will stop lactation, so pregnant women may not be able to breastfeed because of insufficient milk secretion. If the pregnant mother happens to be breastfeeding, she may have ovulated even though she has not had her period, so strict contraception is recommended.