Hi! Welcome on board.!

Please don't worry or be concerned with anything. What you are experiencing is just a normal part of the process you go through every night as you fall asleep. Usually however, you surrender conciousness before things like this happen and so do not experience them.

Such experiences are normal for those of us that practice the WILD (Wake Induced Lucid Dream) technique. My advice would be for you to try to recreate the experience. Perhaps you will be able to use WILD easily?