Have you been tested for Lyme disease? I know that there are 2 tests for it, and one (I think it's the Western Blot test) seems to be more accurate than the other.
Lots of us on this site have been complaining of joint pain off and on this whole summer. Hope it's not a serious cause in your case, dear...keep us posted, and don't wait too long to see your doc if this keeps up
