Vet visit went well. Good news is they don't think its pain related, bad news not sure exactly what is causing all the panting, pacing, regurgitation, vomiting and general anxiety. Her heart rate was 169 BPM, so a little high for her size but no skipped beats so not overly concerned there. She has gained 6 lbs since her last visit so regurgitation some food isn't adversely affecting that way.
By the time the exam was over had all 3 of the vets at the practice in the exam room. Consensus for now is age related anxiety. Started her on Trazadone Hcl 100 mg tabs so see if that helps. Also recommended Zylkene (milk peptide/casein supplement) going to get that online since our vet was honest and says they charge way too much for it (she isn't the senior partner who makes those decisions.) Of course one of the senior vets had to blame it on feeding raw and recommended Purina Cognitive Therapy. At least our vet and I are in agreement on commercial foods and all their GMO products, so I was polite to the senior vet and said I'd look into it.
So we shall see what the next 30 days brings as far as change in her behavior.