Breast swelling and pain in early pregnancy will usually disappear naturally in about 3 months. The breasts begin to increase in size and engorgement is obvious in early pregnancy because the glandular ducts of the breasts develop under the stimulation of estrogen and progesterone after pregnancy, and the glandular vesicles increase and gradually expand to prepare for the secretion of milk and breastfeeding later. Many women experience breast swelling and pain in the early stages of pregnancy, which is a normal physiological reaction and usually disappears in about 3 months. It is recommended not to wear tight underwear after pregnancy to prevent squeezing your breasts and to eat less hormonal foods. If you still have breast pain after 3 months, don’t worry, rest more and have regular checkups or go to the mammography department.