I remember feeling that way myself. The good news is that people can and do recover. It seems, at first, that not drinking causes anxiety but in the long run, it reduces it substantially. You just can't see it when you're in the throes of it. One of the reasons they say alcohol is "cunning, baffling, and powerful." Also I have had seizures and the feeling before was not really like you described. Not saying you won't have one, just giving you my experience.
Sounds like a good plan to be honest with your dr. After all, they have your best interest at heart. Are you planning to use any support besides SR? It wasn't until I did that I have been able to remain sober for any period of time.