The following are some of the reasons for nipple pain during pregnancy: 1. Consider the reasons related to hormonal changes in the body during pregnancy and damage to the nipple area. This is a normal physiological change, and it does not matter. 2. nipple pain is caused by various reasons, such as excessive cleaning of the nipple in the shower, which causes damage to the skin and mucous membrane, and some pregnant women have inverted nipples. If a pregnant woman has nipple pain for a long time, she needs to go to the hospital in time.