I’ve had sometime similar to yours...I’m sure I wouldn’t have died - I was 18 and in perfect health - just suffering anxiety that night for some reason. I went and laid on the living room couch and suddenly felt as though I rose out of myself and had the sensation that I could travel ....sort of flying...definitely felt that I had left myself on the couch...but quickly thought of my parents and sisters and didn’t want to go anywhere. I figured I had to get back to myself and decided moving would work. I jumped up and it was over.
Never happened again.
Interesting that you say, "I rose out of myself".
One thing that became strikingly clear to me during my OOBE was that I am not my body. I came away from the experience understanding that I own the meat body, the same way that I own my truck. It's just a temporary vehicle, and I'm the driver.
There's a book by author Albert Taylor called "Soul Traveler" that's a best-seller on the subject of OOBEs. I haven't read it, but I hear it's one of the best out there.
I had a friend who experienced the same thing.