You should've done a RC after you decided to stop the attempt. You probably would've been in a dream. As for what an OBE is (and how to do them), that's up for debate and some people just disregard it like the person above me. I would suggest looking into it a bit and experimenting around then coming to your own conclusion.

Also, this could've been HH. Sometimes I enter SP and never even realize it until I try to move and can't so it's possible that you were in fact in SP and were just experiencing HH, or even HH alone. I'm not entirely sure if SP is a prerequisite for HH or not.