Hi, Aileen ~
Welcome - and thanks for posting your question.
Your concern is quite understandable but as Kay pointed out, these benign tumors and the symptoms they produce are different for each patient. My AN was large (4.5 cm) and although I had definite symptoms, they were not as severe as the ones you describe. My balance was noticeably off, I had stabbing pains at (what I later learned was) the AN site, my sense of taste had disappeared (and my appetite along with it). In addition, I was unnaturally fatigued. However, within less than 24 hours of my AN debulking surgery, all of these symptoms disappeared. Oh, I had some temporary (3 days) double vision, a 1-day headache and continuing fatigue, but they all dissipated within days. I still tire more easily than I once did but I'm 67, so, despite my wanting to think I'm much younger, I have to factor in that reality. As Phyl noted, you have great AN doctors and my guess is that you'll certainly be better after the surgery than you were going in.
If you can make it to the N.E. ANA Discussion Forums brunch at Maxwell's in Worcester, Massachusetts at noon on Sunday, April 18th, you'll very likely find it to be encouraging. I'll be there with my wife, the Lovely and Gracious Tina (her official title) so if you come, please introduce yourself....we'll be happy to meet you. I have a very positive 'AN story' that I can share, if you're interested. Besides, the food at the brunch is outstanding!
Jim