I don't know if my problem is from Aciphex or GERD or possible ul...

I don't know if my problem is from Aciphex or GERD or possible ulcer I'm going to be tested for in 2 weeks. I have awful tingling/burning in my tongue and gums. It's horrible. Began at the same time I started Aciphex a few weeks ago. Had taken Aciphex before with good results. I don't know what this burning is about, but have to stop Aciphex for 2 weeks before being tested for ulcer. I'll advise if symptoms stop with stopping the Aciphex. I also have metallic taste in mouth.