I go back tomorrow and keep having nightmares/panick attacks

I am a 2nd grade public school teacher in South Carolina. While I am a part of a teachers union, it is not recognized by my district and the union only helps with legal matters.

I know my situation is different then a lot of teachers on here.

My school is incredibly toxic and, I hate to use this word but don't have a better one, traumatizing.

There is a lot of drama and abuse of power going on.

Unfortunately for me, I'm not a favorite and have to deal with it a lot more than some other teachers.

I already have an exit plan for the end of this school year.

But right now, I just never want to go back to that school. I want to hide or disappear so I never have to face those people again.

I go an email telling us the schedule for the PD tomorrow and I felt like I was dying. The pit in my stomach grew and I thought I couldn't breathe.

I don't want to go back. I really don't. I wish I could just close my eyes and never even remember the crap that happened to me at this school, but that's not realistic.

I need the insurance. More than anything else, that's why I'm still there.

For anyone feeling like I am, remember you are not alone in that feeling.

Any advice from people in similar situations or who have been through something similar would be great.