What your describing sounds like it might have been a dissociative experience. To some degree, we all dissociate at times, and there are a wide range of signs, such as memory issues, feeling disconnected, confusion about where you are and not remembering getting there, or even memories that are distorted from reality/impairments when it comes to perception.

I'm not sure if it's dissociation or not....but keep an eye out on it. If it's a pattern, it's definitely time to talk to the pdoc.