I do not have NF2. I asked my ENT if my kids were at risk of having an AN and he said they had no higher risk than the general population. In other words, for one of my kids to get an AN, it would be like lightning striking twice, pretty much not going to happen.
As far as pain, while many of us have a "full" feeling that can border on being a dull pain from time to time, I have never had unbearable pain like you describe and I don't recall ever reading about any AN sufferers having unbearable ear pain. To the best of my knowledge, ear pain on the level you are describing is not associated with AN's.
Further, only having high frequency hearing loss is not typical of AN's eaither. Typical AN hearing loss shows on one side only, with both low and high frequency loss with the middle range relatively normal. Your graph should look like a mesa, low than a fairly broad and flat middle section dropping off to a low level.
Like AZJack says, an MRI with contrast is really the only way to know for sure. There are a few reasons why your Dr may not have ordered one. He/she may know what they are doing and know that your symptoms are not due to an AN, your insurance company probably needs strong justification to authorize an fairly expensive test like an MRI, or your Dr is stupid and you need to find a new one.