I know what this is, it usually happens to me. Your awake and you just got up. Your still lying in bed and you still see these where dream scenes. I one time was lying on my couch not wanting to move because i just got up and saw there was a bird sitting there in my couch. Either that or i believe its something like where you dream your in your room and other stuff is going on. Your moving in your bed like its a dream(i dont believe i get sleep paralysis) then you realize whats going on and you realize one of the dream characters are there and your awake(though they do vanish quickly). Either way i wouldnt worry about it.