Nightmares

Due to PTSD my PTSD I get frequent and vivid nightmares that I have to take meds for to try and prevent the nightmares... The nightmares also bring on night terrors.  Where I fight in my sleep as well as when I wake up there's times where I'm completely frozen.  I can't scream, cry or move... Nothing.  And it's the most defenseless feeling I've ever felt.  Anyone else like this?