You could have had an obe and your subconcious created the scene of your bed being as if you awoke- sort of dreaming while obe- I think I have experienced them.
my first OBE was very similar! i was asleep on the couch and the phone rang so i got up to see who was calling. i looked at the caller id....and decided not to talk to that person and when the answering machine came on I woke up on the couch realizing I hadn't moved at all, but it was the person that I saw on the caller id!!! i thought it was just some sort of dream...but soon after realized differently.....
Elway
ggs