Welcome, Percy! (I can say that even though I'm brand new myself, right?)
I'm so glad you had the endoscopy! As I read this thread, I wondered why your original doc never ordered that. I think it's pretty standard and pretty reliable to diagnose GERD and similar problems.
Now you can get some treatment and then reduce the symptoms and then -- I hope! -- the anxiety will diminish too.
Sometimes I think docs just go deaf if (a) they can't figure out what's wrong and can blame it on anxiety, or (b) hear the word "anxiety" and pretty much assume every symptom that comes after that is no more than a manifestation of the anxiety.
Docs are human too, of course, but over the years I have had to become rather good at making a pest of myself until I get answers. And I'm afraid I've learned not to bring up the anxiety unless I have to/need to.
Often she hid at the sight of wild beasts,
forgetting what she was; and, though
herself a bear, shuddered at sight of other bears.
-- Ovid, Metamorphoses