Tina,
Sorry your symptoms are so debilitating. I remember after w&w for 3 yrs and being told my 2.7 CM tumor was " not showing growth" for most of that time,,, how absolutely terrible I felt by the time I opted for surgery. Don't let size be your only determining factor. It is but one variable and not the most important.
You mention that yours has mushroomed out of IAC into the CPA and is up against the brainstem. That in itself says volumes about why your symptoms have worsened and what the tumor is "doing inside". Mine grew just as yours has, although I was told it was " not changing size" ,, and eventually was indenting my brainstem to the point I was unable to function very well most days. I remember feeling much the same way you describe,, VERY fatigued, not able to preform daily tasks as I once did and wondering what was going on. Once it gets to the brainstem and grows ANY to indent it, you have fewer options as w&w is gone and radiation is usually not advised due to swelling associated with it.
I hope you get some results tomorrow but more importantly,, I hope you send your MRI CD out to house and or Keck and get a second or third opinion. I don't know who your present Dr is, but if he is not highly experienced with ANs,, you may not be getting really quality advice as I came to find out I was not for 3 yrs.
Please let us know how you get and what your report says. I was glad once I finally changed Drs that I was able to get MRI results same day as test with new Dr.. That is a big relief.
Best wishes are with you!
Jane