I would recommend that you call your doctor. It could be pericarditis, pleurisy, heart problems, etc. It's not something to "wait out"....it could also be a blood clot in your lung (as was my case).
I lost a good friend just recently who thought she would "wait it out"....well, she waited too long. I don't want to scare you - however, blood clots, chest pains, heart attack, etc. are not symptoms to wait through.
My suggestion would be for you to call your doctor. Please keep us posted and let us know how you're doing.
"I believe that friends are quiet angels who lift us to our feet when our wings have trouble remembering how to fly." - unknown