Suzanne

I am very biased here since "Ear Pain" was my one and only symptom that was misdiagnosed so long that I was Stage IV.
A simple CT scan showed there was a tumor pushing on the nerve. So I think you should get a CT or MRI. I agree with Eric that this is your decision and the ENT should honor it. I would not get nor recommend a PETscan. It could be a simple explanation like sinus, or blocked Eustachian tube, but asking for a CT scan sounds very reasonable and would help ease your mind once it comes back clear.
Charm