If you're not making up those numbers, then there's no way this is not enhanced. Gaining 11 pounds in 4 months while dropping bf%? Ok buddy. Also, your traps are looking mad saucey in that after pic...

You shouldn't claim to be natural when you clearly aren't. It will only discourage others when they don't get the same results after 4 months naturally.

You don't look big enough to be on real juice or HGH tho, so my best guess is a generic rad/gw/s4 cutting stack. Honestly I'd say it's not worth it, especially at your age. But you do you I guess. I just hope it will have been worth the upvotes.