Yasmin and weight problems.?

I have been taking yasmin for over a year and have been experiencing weight LOSS problems. i put on a lot of weight (due to ridiculous men and stress and etc.) but i have been working my *** off for 3 months. working out every day, pilates, and a 1,200 calorie or less diet. and the weight is NOT coming off! I have read many articles saying that women have had similar troubles on Yasmin. Is there any other birth control pill anyone could suggest???