Awakening

As if I was opening my eyes from a deep sleep, I found myself in my bed staring up at the ceiling. Was it all just a strange dream ? For a few moments, I laid there composing myself. As I started to get up to an up right position, something fell on the floor from the bed. I peered over the edge of the bed and there was the key.

Getting out of bed to pick it up, I pondered...if this was a dream then where did this key come from ?
Looking around my room, I could not see anything that was strange or out of place. This was my own bedroom. Did I ever leave this room ? This was indeed a puzzle. I look at the bedside clock and it was 3:15 am. A dream that was not a dream ? Strange indeed. What do I do with this key ? Do I dare to go back to sleep ?