I've had sort of dissociative kinds of experiences on psychs or while meditating: kind of like I'm floating up above the room, and my body/the material world is sort of "below" me. I've never had it extend to the bed I'm lying in, but maybe you're describing something similar?
Relatedly, when I was very young, I used to have a weird sort of hypnogogic hallucination that me and my bed were floating outside, looking down on me and my dad playing catch. Also potentially related?
Blessings
~ND
"There are many paths up the same mountain."