Breast Pain in Pregnancy Explained: Causes, Timeline, and When to See a Doctor

Kavya Maheshwari06 Jan, 2026Health

Breast pain during pregnancy is primarily caused by hormonal fluctuations, especially rising levels of estrogen and progesterone. These hormones increase blood flow to the breast tissue and stimulate the growth of milk ducts and glands. As a result, breasts may feel tender, sore, heavy, or swollen. The skin around the breasts may also become more sensitive, and some women notice a tingling or aching sensation.