weight gain on birth control..desogen?!

so i couldn't loose weight & after 6 months of birth control i was alot heavier. i didn't change my eating habits or exercises. went off it & i looked like i lost weight & my tummy was smaller. recently i got a bf & condoms werent working so i i tried it again & my breast,thighs,arms and tummy were huge after only 3 days! has anyone experience weight gain from desogen or any other bc? is there one that wont cause weight gain?