I am fighting weight gain too and the only thing I can figure is my new bc too. I started seasonale from Depo the first week of Feb and since have gained 15 pounds, and we are talking one week fine the next the pants won't button. There are other factors for me: quit smoking in Oct, but from Oct to Feb stayed the same weight. Could be from surgery, very inactive since December, but yet again, no gain until Feb. OR stress, surgery, husband lost job, having to move and sell condo etc....But 15 in two months seemed like an awful lot. My mother and hubby both now think BC, as I did not gain a single pound on Depo. Then I read that BC hasn't ever been officially linked to weight gain. So, I of course freaked out. None the less, I am going back on Depo tomorrow. My dr gave me the okay to do aerobics so for the last two weeks I have been working out again. It is harder since I still can't do much with my back surgery and I am not 22 anymore (that was my age when I lost 25 lbs), I am now 27 and who knows what my hormones and metabolism is doing. I am returning to work next week too after being on disability for eight months. I am hoping that will make a difference too. I will let ya know if the weight comes off. But then, I won't know if it was the pill, or me working out again