Hi patty,
Sorry about your accident. I had vivid terrifying dreams with violence as well. A lot of times I would wake up my head throbbing, are you having headaches? Sometimes it was like my body was telling me how much pain I was in.
There has been old posts with plenty of people having similar nightmares. I did ask my doc if it was possible to have panic attack at night, and the answer was yes.
I hope this gets better soon, I know how scary it is