Do Breasts Get Bigger Before Period?

Many women notice their breasts become larger the week before menstruation. Breast swelling and tenderness before your period occur due to an increase in hormones during the menstrual cycle. These changes seem to resolve once the menses arrives due to a decline in progesterone levels.

Why do my breasts feel bigger before my period?

Before the start of each period, your estrogen production increases. Along with other changes in your body, this hormonal shift can cause your breast ducts and milk glands to become enlarged. It may also result in water retention, which can increase breast swelling.

Do boobs get bigger before period or pregnancy?

The levels of hormones estrogen and progesterone change during your normal menstrual cycle. These hormones prepare your reproductive system and breasts for a potential pregnancy. Estrogen causes the breast ducts to enlarge.