Breast Pain: Period or Pregnancy? Symptoms and Possible Causes - breasts enlarging during menstruation

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Sore breasts before period: Causes and treatment breasts enlarging during menstruation


From swelling to soreness to changes in shape, learn what changes are normal in your breasts during your monthly menstrual cycle—and how.

Premenstrual breast swelling and tenderness are common symptoms of premenstrual syndrome, or PMS. Estrogen causes the breast ducts to enlarge.

“During menstruation, breasts may feel lumpier as milk glands enlarge in preparation for a possible pregnancy,” says Sara Gottfried, MD.