Yesterday I went to take a deep inhale and felt a sharp pain in my upper, middle back. I didn't think much of it, so I decided I just wouldn't take any deep breathes. Today I can't even sniffle (I have bad allergies) without feeling the pain. Any form of semi-deep breathe causes the pain.
I was around smokers my whole sixteen years (yes, I'm only sixteen) and even went through my own two year of occasionally smoking. That started with having two a week, to one or two a month, to one every couple of months, and then when my grandad died of lung cancer a month that ago I completely stopped.
I'm scared and not sure what to do. Please help me.