So sorry you are having these issues, with no firm diagnosis yet to suggest a proper treatment plan for you.

This is a long shot, but the symptoms you experienced after the vaccine caught my attention. I know of another NT member who has suffered with a severe case of thoracic outlet syndrome ("TOS"), which was triggered by a vaccine.

TOS can be extremely difficult to diagnose, as it mimics the symptoms of several other pain disorders and very few doctors choose to specialize in it. NT does have a TOS forum, which you can find by scrolling down through the alphabetical listings of neurological illnesses (I'd throw the link up here for you if I knew how to do that!).

There's a wealth of info captured in the "sticky" threads at the top of the first page of that forum, or you might want to just read through some of the posts to see if anything resonates with you.

Hope you start to find some real answers soon. I wish you lots of luck!