Have you seen a GI for this problem? It sounds like LPR.
I am going there tomorrow, and I only hope that they do needed kinds of tests here - in my country and city, which I kinda doubt. We only first got the MRI machine like 2 years ago, medicine is still very behind over here. I actually have all the matching symptoms with laryngo-pharyngyal reflux, but I don't know if they do those 24hour ph tests and stuff like this, but I guess tomorrow I'll find out. though I am almost positive I have it becouse pretty much all the sympoms match, my throat pain is worst in morning and night just like I've read in articles about
LPR and I think the fact that I started having a sore throat at exact same time that I started having heartburn confirms it too.