weight and birth control: i had very heavy and painful periods so i went on birth control. I tried many different pills and none worked so i went to the depo shot. This is when i gained 30 pounds and went off of it after 2 rounds. I now have an iud and weight 165 pounds. I eat very healthy and am very active and have tried just about everything and i cannot lose enough weight to become healthy again. Why can't I lose weight and how do i fix it?