Yes. You are small. You're 16. Of course you are small. Don't call it "muscle dysmorphia" like it's some syndrome that you, and many others suffer from. Thats not how we get down here.
Now that we've gotten that out of the way, you need to eat if you are going to get bigger. Please give an example of your diet and workout routine. Not too lengthy, but just a little more than you have just shared. Your muscle growth results will come more from your diet than your training.
Just chill out brutha. Take it slow. You have your whole adult life ahead of you. Furthermore, I've been in this game for many years, and have never heard of professional strength creatine. What the hell?