I also suffer from nightmares every night just as you described. I move around a lot and am jolted awake by awful things that occur in the dreams. I snore loudly and feel very sorry for my partner because I keep him awake. I was lucky enough to go to get a sleep disorder study but the results only showed that I have sinus congestion but they said it wasn't serious enough to be considered a "disorder." I don't think I had nightmares while in the study though and slept very lightly because I was nervous about the cameras. I would suggest getting a referral to a sleep disorder center if your insurance covers it and if you think you can sleep the way you normally do but at a sleep center.