I have the same symptoms as you (and many more). I have been able to know when I am getting an ear infection because of the change in pain.

My ENT did exams, scans, and test. But found nothing wrong. He released me and ruled it was Long Covid related. Multiple bloodwork shows my ANA is very high, and is staying high for over 2 1/2 years.

I have been accepted to go to the Mayo Clinic for seeing their specialists, have tests, exams, and procedures. I am over 2 years out with Long Covid, so I do not qualify for their Long Covid Clinic. So I will be seeing Internal Specialists instead.