Why am I gaining so much weight so fast? I've had my growth spurt! PICS INCLUDED!!!!!!!?

you're just filling out so theres nothing to worry about.stay active and keep eating healthily, if you're not too keen on your stomach try doing sit ups/crunches everyday (you dont need too many,about 20 if you can) and twists will also help as they work your obliques too (muscles on the side.