Hey MerylG, sorry you've had to go through so many doctors. I was wondering...
Do you have a possible family history of allergies? Just trying to think up suggestions to help you out, Hot teas (de-caf) help with my sore throats sometimes.
Going to so many doctors can be quite frustrating.
Really wish I could help you out more with advise.
Wish you the best on those test results
keep us informed!!!