christina-
I would definately go to the doctor soon and get it checked out. I have similar symptoms (came about a different way, but similar symptoms), and it turns out I have a herniated disk in my back that has just gotten worse and worse over the last 4 months. Anyway, i'm with your mindset, that my biggest thing is being able to work out (which I haven't been able to for the last 4 months...I blame that for my lack of ticker movement
)
Anyway, REALLY sorry to be the bearer of bad news, but the moral of the story is I think you should get to a doctor asap, because I waited for about 2 months to go to the doctor, and I'm convinced I might not be in pain right now if I would have gone to the doctor right away.