Most women can experience breast tenderness after 25 days of pregnancy, and the duration varies from person to person. It usually decreases or disappears after 3 months of pregnancy, but a small number of pregnant women may continue throughout pregnancy. Breast tenderness in early pregnancy is a reaction to early pregnancy, and most women can experience it after 25 days of pregnancy. In women with irregular menstrual cycles, breast tenderness may appear only after 35 days of pregnancy. The duration of breast pain varies depending on the physical condition of pregnant women and their hormone levels, with short duration of 10-30 days gradually relieved and some pregnant women can gradually reduce or disappear after 3 months. In addition, due to the high estrogen and progesterone levels throughout pregnancy, some pregnant women may continue to experience slight chest distension throughout pregnancy. When breast swelling occurs during pregnancy, it can be relieved by hot compresses, massage and other treatments, and avoid squeezing and damaging the nipples. You need to pay attention to hygiene and avoid spicy and stimulating diet.