Night terrors

For two nights I have woken up screaming from nightmares. Yes, screaming. I'm very lucky Annie is such a heavy sleeper. I don't know what is going on, but I am now afraid to go to sleep. I stopped watching scary shows (sorry Fringe, but it has to end here). I don't watch movies. I don't read scary books. I can't remember the last time I even had a nightmare, or if I ever had them at all. I am getting little to no sleep, which definitely makes me the life of the party (yeah, two in the last two days). Is there a magic button for this?