Starting at age 14 my CF doc would peek under my arms and down my pants to see if I'd started growing hair yet. HATED that!! I wish I had the balls to say DUDE, I'll let you know when I hit puberty -- was absolutely humiliating and quite honestly violating. You'll get there, buddy.
You may be naturally late. It maybe a little embarrassing but if you can ask your parents if they were early or late. I'm 16 and I was a little late, around 15, but you'll catch up. If you have any siblings ask them to. That's a little less embarrassing