Im 14, and Ive been having trouble breathing latley. Earlier while dinner was being prossesed, I went to take a breath, and got a slightly sharp pain in my chest and back. How I have to breath, in order to get enough oxegyn is to like, yawn so I can breathe or kind of like gasp. Occasionally when I do that my chest hurts, why is this so? And why is it that I have to breathe like this? Somethings that you may need to know- At my mom s ( where I am mostly ) everyone, but myself smokes there. (My mom, stepdad & poppop.This smoking is an all day, everyday thing. I try not to be around it, although its hard not to be living in it.)