So I've been on birth control pills for 8 or 9 years...I'm on my 3rd brand. I can't remember the original, but then I got switched to orthocyclen and then a few years ago to Mononessa. I never got a choice from my dr and no heads up when they switched me. But ever since I got put on Mononessa I've gained something like 30lbs and my sex drive has dropped to almost non existent. I exercise regularly, and used to be able to lose weight, but now I even gain it while exercising and eating well.