Quote from WhiskersOnKittens:

So I guess for now, I will just try another pill (I'm thinking maybe Ortho TriCyclen Lo?), until I come up with something else.

OTC Lo made me gain weight and gave me a bunch of other side effects. Alesse is another one that made me gain a bunch of weight

Yasmin and Levlite are supposed to prevent weight gain. Basically anything with a low dose of estrogen shouldn't cause any weight gain. I've been on Mircette (Kariva) and haven't gained any weight and I've had minimal side effects. So far, it's my favorite.