Oh man, I know that exact feeling and I'm so sorry you're experiencing it right now.
That anxiety and fear and anger all mixed together is intense sometimes.
I think hitting up a meeting is an excellent idea to regain your own serenity. In addition to finding solace in the fact that you're working on a plan B or already have a plan B in place.
Sending you hugs. I hope you find a way to detach and relax this evening!