Breast swelling and pain can occur in early pregnancy. After pregnancy, the level of hormones in the body will increase, for example, under the effect of estrogen and progesterone, the pregnant mother’s breasts will increase in size, the alveoli will grow and the lobules of the breast will also grow. Due to the swelling of the breasts, the pregnant mother will experience slight breast swelling and pain, and even tingling of the nipples. If you check the areola, you will find that the coloring of the areola will be deeper than before, and even Montserrat nodules will appear in the areola, which are caused by the increase in hormone levels after pregnancy. After pregnancy reaches the middle stage, the hormone level is relatively stable, and the breast swelling and pain of pregnant mothers will be appropriately reduced, and the pain will not be very intense and will not affect the daily life of pregnant mothers. If you feel a lump or abnormal pain in your breast, you need to go to the hospital for an outpatient examination to rule out breast disease. If there is no breast disease, the slight breast swelling and pain in early pregnancy is normal.