"i first went on this pill when i was 20 years old. everything seemed to be fine. periods were lighter, no mood swings, no weight gain. acne was so so. skip ahead 2 years later and went on a trip and forgot to bring my birth control with me because i had my period at the time and the days just evaded me. so i waited until my next period to take it again. once i got back on it, i had intense mood swings for no reason and tremendous weight gain that keeps continuing. i gained 30 pounds in 6 months since getting back on the pill. my eating habits haven&#039;t changed and i&#039;ve actually been more active but pounds keep coming. it definitely effects sex drive because the month i was off it was high and then went low again after."