I have nightmares, but honestly rarely to this caliber. Although last night I imagined some old friend of mine lose like a whole set of teeth in a fight over me. It was much more gross than I'm explaining, just trust me...and I was so scared and feeling awful for this friend and his mom gave him a really jacked up new mouth...pretty disturbing but apparently he was going to be alright. (yeah sure) Still, I felt so much love for him for standing up for me...then I kinda woke up. I wasn't scared when I woke up, just like "wtf!" Yeah, and there's only one other real example I can think of, but it's more cringe and also like assumed (can't think of the word-inferred maybe?) violence rather than actually seeing it, for the most part. That may have been med related though...but I was also discussing a horror type film at the time as well (one that I still haven't seen because it seemed too disturbing to me at the time).