sex drive on the pill

once i started taking birth control pills my sex drive went rock bottom. lots of other young girls have told me the same thing. i was wondering from someones  perspective who went on the pill & their sex drive  plummeted & once they stopped taking it if it went back to normal. i'm not going to lie before i started taking the pill my sex drive was always high. i've been taking the pill for 3 years now & i never wanna do anything with my fiancé. & also how long should i be on it before i stop taking it bc i'm thinking ab stopping pretty soon.