"i switched from mononessa to yaz. after the horrible experience i had with mononessa, yaz was amazing! it was all good until the beginning of my 4th year of being on it. my body got used to yaz. i noticed a drastic change in my sex drive(like no sex drive at all, my poor bf), and insane mood swings and starting to feel sadness. i went to the doctor, today actually, and asked her to switch and now i am trying microgestin in one month after i get my period again. i am nervous since i am reading a lot about the weight gain and mood swings and low sex drive involved with microgestin which is what i&#039;m trying to get away from. but good thing is, i can always go back and keep trying since there are thousands of birth controls out there. goodluck!"