After running a fever and having body aches for over 3 days, went to Doc and, since I'd had a tick bite about a month earlier, he assumed lyme's disease. So far, tests have been negative which, I know, doesn't really mean much. Started taking 2 doxycyclines 4 days ago. (I'm into my 5th day), but I'm not seeing much improvement. My fever is "manageable" during the day w/Tylenol and aspirin, but usually spikes at night. I'm still having headaches and muscle/back pain. Is this typical?

I can deal with the muscle pain, but the fevers are really taking their toll.