Birth control

Okay so I'm 17 years old and ever since I was 15 I was put on birth control. I was on the pill until about 9 months ago my dad made me get the nexplanon (the implant in your arm). As soon as I got it I started gaining weight like crazy even though I always diet and so I started working out and it's not doing anything to help me lose the weight. After I got that removed I started on the Depo shot and the depo shot made me gain 30 extra pounds on top of the 30 I gained from the nexplanon, it also made me lose my period for 5 months even tho the depo shot only lasts 3 months. Anyways idk what to do about the weight gain. I workout and diet and it just won't come off. I don't know what what else I can do 😢