The phenomenon of watery nipples in late pregnancy is a symptom of milk production and is a physiological manifestation. This is because estrogen increases in late pregnancy, so that it can have the effect of preserving the fetus. Estrogen promotes the secretion of milk, so it is normal to have milk secretion, breast swelling and pain, dilated milk ducts, and visible dilated veins on the surface of the breasts during this period. You should try to pay attention to hygiene, pay attention to washing, and keep your nipples dry and clean locally. You need to pay attention to wearing loose underwear to reduce the local breast stimulation, but also to facilitate blood circulation. If the underwear is too tight easily lead to poor blood circulation, resulting in the feeling of breast pain.