The pills and your breasts
Birth-control pills might make your boobs a little bigger
Because the hormones in the Pill cause fluid retention, it is likely your breasts will feel somewhat fuller.
Some types may heal breast blemishes
Just as certain kinds of Pills contain hormones that clear up and prevent facial acne, these types also can have a zitbusting effect on your set.
They may affect your breast-cancer odds
Research suggests that Pill takers may have a slightly greater risk of breast cancer than women who have never been on oral contraceptives. Talk to your gyno about the risks.