It is not recommended to continue breastfeeding when you are pregnant. When a woman is pregnant, the increase in estrogen and progesterone levels will inhibit the secretion of prolactin in the body, resulting in a decrease in milk. Although there is a decrease in milk, but the quality of milk will not be affected, so after pregnancy can continue to breastfeed, but after pregnancy, the amount of milk will be significantly reduced. Although you can continue to breastfeed when you are pregnant, it is not recommended that you continue to breastfeed because the baby may reflexively cause uterine contractions during the process of sucking on the nipple, which may easily lead to miscarriage or premature birth. Women are advised to weigh the pros and cons of continuing breastfeeding after pregnancy, and to seek medical attention as soon as possible if they experience abdominal pain or abnormal vaginal bleeding at any time during pregnancy.