Last spring i was in a very bad car accident and got a concussion, broke my orbital socket, nose, cut my face, broke my wrist, and my intestines were lacerated by the seatbelt. Was in the ICU for a few days from the intestine surgery.

Have pretty much fully recovered physically. However, when i am by myself i sometimes see a dark shadow or feel "something" behind me. It almost feels like some kind of "ghost", which i have never been a big believer in, hence why im asking in the mental health subreddit rather than a supernatural one. But the presence has a dark and scary feeling to it, like it is some kind of evil spirit. But i dont feel really scared by it. Is this a common thing with people who were in accidents? Is there a name for this phenomenon?

I am from the USA.