I have experienced something really wicked the other morning. I woke up out of bed and noticed my self in a different room, I saw some weird stuff, and I have noticed that my room has completely changed. I noticed I was in a different bedroom "similar to mine" and this kept on happening so on and so on.
Sounds like you had either an out of body experience or a false awakening Rin. In either case, there is nothing particularly wicked or unusual about your experience, other than that you were in the real time zone where things just appear differently than they do in the physical. In both out of body experiences and false awakenings there is almost always something out of place, which if a person can learn to look for, will alert them to the fact that they're either out of their body or in a lucid dream. A person can have a lot of fun with this when they learn to accept it for what it is and expect it.