Sharp pain every time I breathe?

I think it's something called Precordial Catch Syndrome. I have it occasionally, it comes while I'm resting and not doing much. I have to pull my arm in, crumple up and breathe really shallow for a few minutes and it usually goes away after. However the symptom of lasting more than two hours is unusual so I think you should go see your doctor because chest pains could always be something more! You only have one heart, and it's better to be safe than sorry! Hope it gets better soon.