r0x0r

It could be PCS, a fairly "nothingy" complaint with no real risks other than perhaps the pain coming on while, well, doing anything where you can't suddenly think "Crap, feels like a needle's peircing my heart and lungs"...

I've had it myself on and off... Some people find that a big breath "pops" the PCS and makes it go away, never been brave enough to try myself.

James Tringham

Life is a fatal disease. *

* Other cliches can be supplied.

Glyn

Sounds like you've pulled an intercostal muscle (one of those between the ribs). I've had that, the first time it happened scared me as well.

Sir Bert Preast

I had sharp chest pains that on day 2 worried me enough to go to the doctor.

He told me "you've got flu, you dickhead".

He was right.

RedefiningForm

It's either that or it's just acid reflux which taking an antacid will help with.

MixitupMixitdictator

if you do die don't forget to get your mum to post a notification dude

postal postie

muscle strain for crying out loud

every time you breath your ribcage expands causing the muscle to exapand also.
i got sever cramp in my upper back after doing my back/bicep workout a few works ago. just under the arm. couldn't take deep breaths without pain so had to stretch it out

qwerty2k

don't think its muscle strain as it went 20mins later and i haven't had any pain since.

Retro

It's not neccessarily that PP. There's lots of potential reasons... fortunately heart attack isn't one of them (or it wouldn't be linked so closely to his breathing).

Valiant Richie

shortness oif breath