Night light or the hallway light on to cast some light into the room
I cant have the light on due to my bf can't sleep with it one- once in a while he turns it on.
Sometimes i feel like there are others in rooms; I usually cant sleep and have to get up.. ghosts- i use to think aliens when i was a little younger for real... I sometimes have that thought cross my mind still.

Maybe it is stress or anxiety ??

Oh and just because you may have a "trait" of schizophrenia does not mean you are schizophrenic...I would hope a dr would know that the mind can be a wonderful trickster I would still talk to your therapist if it is really bothersome