Im going on the pill and im worried about gaining weight is there any way i can prevent this?

The low dose combination (estrogen and progesterone) birth control pills do not have weight gain as a side effect. In fact, the bloating/weight gain associated in the prementrual time when not on the pill, is not there. Weight gain is always related to what you eat and how much activity you do and the balance between those two. To prevent weight gain always exercise regularly. Eat healthy.