The Pill and weight gain? HELP!!!?

I started Levlen about six months ago and same! I've tried everything, and I've put on about three kgs. I feel unhappy as well :( I think I might go and speak to my doctor about changing to a different pill. I even said to my doctor 'will the pill put weight on me?' and she just laughed and said it was a myth, and that if you exercise and eat right you won't put on weight. But I have been eating right and doing exercise.