"i was on yaz from the time i was 16 to 22. i never really had and acne except the occasional pimple before my period. i had no break through bleeding even if i skipped my period and took my pills back to back. i had no depression or mood swings outside the normal period mood swings. i did notice a decreased libido and this wasn&#039;t until after i went off the pill for a month. i didn&#039;t realize how much better i felt coming off the pill. (until about the third week of coming off of it). this was the first and only birth control i tried and it worked for me. i decided to switch because i had been on it so long and thought maybe that was the reason for the decreased sex drive. that is really the only negative thing i have to say about yaz."