Hi, @cindykoch
I hope you do manage to get a referral to a gastroenterologist. I believe that specialty would be the best start with a chronic cough since it could be caused either by something in your larynx or esophagus.

You mention that you did try Zyrtec. Did that help at all? If so then that would definitely narrow things down.

I have Barrett's Esophagus and when it's particularly troublesome I find I do cough a lot but it doesn't sound as if that's your problem. For me it also causes hoarseness.
Please keep us up to date on how things are going.
JK