First of all, if it IS the AN, you probably won't die.
Wow! I can relate so much to your post. I couldn't for the life of me figure out what was wrong with my vision. Figured it was the AN. Don't know for sure yet, but now I'm CERTAIN its the AN. I think I've had just about all the symptoms you mentioned.
One thing that has helped me this month - I've come to peace with the AN. This is my new life. I will just keep doing my usual activities (with reason - I'm staying off my racing bike), and if I fall over, well, I'm in pretty good health - pretty good chance I'll just get up, dust myself off, and keep on trucking (as they used to say in "the day"). That's my plan, at any rate.
Once I quit panicking and getting anxious about maybe falling over at work, etc. I became much more confident. And you know what . . . I haven't fallen over yet (at work!).
I've thought about going to counseling to talk with someone about this. My family is fairly supportive, and I have you guys, but no one really understands what it's like to live like this except someone else who has it.