Sounds like you pulled a muscle there. Its common and not abnormal. Does it hurt to take a deep breath? Anywho, I know the feeling because its happened to me dozens of times.
You deflate it by medicine or if its serious they get you a tube and do it manually nothing bad
don't sit at your desk eating potato chips and fatty cakes.
If you have it when inhaling and exhaling, it could be a bronchial spasm.
Woah holy shit, i think greed just helped someone out.
him award naowww.
& Good luck at the OP, hopefully it doesn't hurt.
just go to the doctor and have it checked, could be a fractured rib, or worse