"i started this birth control after getting into a serious relationship with my current boyfriend. the first month, my breast were so sore and tender i could barely touch them but they did get bigger! my periods became really light (very happy about) and lasted like 3 days and i only had to use a panty liner! the down side is i&#039;m gaining weight for no reason! i&#039;m not eating bad and i&#039;ve been exercising more and i&#039;m still putting on weight! i&#039;m changing birth control to microgestin fe."