WHEN I WAKE UP I HAVE LIKE A LUMP IN

WHEN I WAKE UP I HAVE LIKE A LUMP IN MY THROAT AND ALSO DURING THE DAY. IT SEEMS TO GO AWAY IF I DRINK SOMETHING, BUT IT ALWAYS COMES BACK. IT GIVES ME A SORT OF GAG REFLEX. also, JUST ABOUT ANYTHING I EAT, REGARDLESS OF THE QUANTITY MAKES ME FEEL BLOATED. EVERY 2-3 DAYS I VOMIT AND GET DIARRHEA. I AM ALSO DIABETIC. I SPOKE TO MY DOCTOR, HE IS MAKING AN APPOINTMENT AT THE VA CLINIC, BUT I HAVEN'T HEARD WHEN IT WILL BE. MY BROTHER IS A DOCTOR, APSYCHOLOGIST. HE SUGGESTED I TALK TO A PHARMASIST ABOUT TAKING ZANTAC AND ASK HIM HOW MUCH. WHAT DO YOU THINK? IS THERE ANOTHER OVER THE COUNTER DRUG THAT WOULD BE BETTER, UNTIL MY APPOINTMENT?