"i started taking loestrin 24 to prevent pregnancy, not really knowing that birth control was supposed to clear your acne. i was considerably surprised when my skin cleared up [even on my back, which has always been a trouble area]. the first week or so was kind of rough but once i got past that, i felt incredible. i didn&#039;t experience any real weight gain or loss but i think i might have gone up half a cup or a whole cup size. i definitely love loestrin."