I have been running a low grade temp with accompanying joint and muscle aches, headache, and severe fatigue for two and a half months. I have had many blood tests. The only one to come back with a possible positive result was Rocky Mountain Spotted Tick Fever. I had 3 tick bites before this began. The test was borderline. Otherwise, all tests for other problems including auto-immune have been negative. I took 24 days of doxycycline and have had steroid injections. Still have temp that varies from 99.9 to 101.5. Any suggestions?