HAVING TROUBLE BREATHING! when i try to take a deep breath i can onlky reach a certain point untill this sharp pain occurs. Also if i twist my upper body as if I were trying to crack my back, the same pain occurs but with out the breathing,I'am actuall holding my breath. I cant really decipherif it is my lung or my heart. this has been happening for while off and on, but since today(I skateboarded) the pain is continuous and horible.