I've Run A Low Grade Fever For 6 Days (98.9-99.7).

I've run a low grade fever for 6 days (98.9-99.7). I had four dental crowns and a filling 8 days ago but have no related pain or swelling. I do have TMJ and my jaw on the procedure side is a bit stiff. I also have a history of RA and fibromyalgia. The elevated temp is wearing me down!