You are 17, do not take test boosters, pro hormones or anything like that, continue to work hard, eat a lot, switch up your workouts and do everything natural until you hit an unbreakable plateau, assuming this happens in your 20's, then try a test booster, I would advise after 21...my gains in my teens were the best I ever had
Protien, BCAA's, creatine, NO pre workout supps, fish oil, a multivitamin, some beta alanine...these could your stables
Don't get greedy early and start test boosters or designed steriods, if you ever use them it is best when you have exhausted all other resources in getting big and ripped