urgent care... go to urgent care. Breathing (or not being able to) is one of those things I don't mess with... if it turns out to be nothing... no big deal... but if you put off getting in for treatment it could get worse quickly... I put off going in 2004 and ended up doing a 6 day cycling tour of Ireland on antibiotic and a decongestant. Ireland was gorgeous, but man breathing on the bike was tough... I felt like crap.

hugs and hope you're better soon... I hate being sick too...