Hi Code name Wallaby,
I felt a lot like you described when I was suffering terribly from Lyme Disease. It totally attacked my mind and body.
You must be feeling pretty alone and frightened, as well. Being given a diagnosis of Generalized Anxiety really doesn't help to reduce the anxiety at all, I imagine!
I saw this website and thought it may give you some guidance: helpguide.org/mental/generalized_anxiety_disorder.htm
Hope you start to get some relief.
Co-Moderator Lyme Disease Forum