I was in my room, at my desk, drawing on my laptop with my IPad on because I need some noise to concentrate on what I'm doing (as weird as it sounds), I felt a weird sensation on my body, so I looked at my IPad and saw that in the reflection there was something behind me, I thought it was my desk chair but it was moving, I turned around and there was nothing, I turned back at my IPad but now It was only me on the reflection. By now, I was really confused, I looked and my door was closed and locked, just how I left it.