Change your diet and get in the gym more often. You don't need any AAS or anything else to do this. And to shut down your natural production right now, at your age, is just irresponsible.

Head over to the Nutrition/Diet Section for help. Post your current diet and those guys will help you fine tune it and you'll be on the right track.

You have to put some effort into it if you want to succeed. Steroids aren't some magic pill that you can get one to "bulk up" or another to "lose fat."

It all starts in the gym and what you eat.

Good Luck