I am not sure if you are still active, but I have been feeling the same exact way since I had a mild/moderate case of COVID at the end of April 2023. I have seen 3 ENT's, had a CT scan and Brain MRI. I did a hearing test and found out I have high frequency hearing loss and tinnitus, My ear rings constanly. They told me there is no fluid and it is probably TMJ. Saw the TMJ doc and she said it is not TMJ. My dentist had already told me that is not what it was and that she felt the same way for a year like she was living underwater and she saw multiple ent's and they kep giving her steriods that never worked and that she didnt have any fluid either and it just went away one day. I was hopeful it would for me too, but here I am same as it ever was.
Have you made any progress or learned anything since your last posts?