Sore throat , fatigue , runny nose, dry cough, severe headache on one side that has lasted 10 weeks. Not that lyme disease or bronchitis or a sinus infection or iron deficiency or thyroid disorder . Then what ?
If you have been sick for 10 weeks should see an infectious disease doctor. This is very common for them to find the cause of a problem that others have failed to diagnose. I hope you are better soon.