I don't know why but I keep seeing things out of the corner of my eye. They are a bunch on dark figures but when I look they aren't there anymore. I saw a giant dark mass in my living room, a head poking out from behind my door, and a dark figure that was very tall and had horns and wings while I was in a car. I haven't been diagnosed with anything but I haven't brought it up either. Does anyone know what this might be? Am I able to stop it?