Been there and I am sorry you are feeling so scared and doubting yourself. I do know how that feels and it is miserable. I remember nearly throwing up one morning before I left for a new job.

One thing I recall is that the really spooky feelings for me usually eased as the day went on. I would look at the clock and by 10AM or so I was feeling much better. I'll hope that for you, too, that over time things will ease up.

But we always have choices in life, even when we think we don't. If this doesn't work out for you, you can maybe go back to your old position or look for something else. Give yourself permission to do that. It will ease the angst.

((((Hugs))))