Okay first, what state/province do you live in, and what country? IIRC you said you live in USA, and most states are 16 years. Pennsylvania is 18. Aren't you like 15? You probably wont be able to which is a good thing.
Never smoke, as much as it seems like a stress relief. Google healthier ways to relieve stress, it'll be a life saver.
Age of consent is also different in a lot of states, I only know PA because I live there, and its the same as tobacco federally (16)
might as well kill yourself if you are gonna smoke.