I've been having nightmares about my job lately? Twice this week?

In both, I was humiliated and discredited by my supervisor. I'm currently away for a week's vacation. Just last week, she was bullying me- screaming at me, sucking her teeth, saying nasty things about me, and rolling her eyes at me whenever I spoke to her. She has made threats about my work, too, in recent months. I'm a teacher. It may be because my students' state test scores were low. That's when I noticed that this abuse has come out full throttle. Even though, I'm off for the week and away from her, I'm still jumpy and fear going to sleep. What should I do? I have to be up really early because I have something to take care of tomorrow. I just want to sleep peacefully.