Dream of person

Im in a red room thats like a pentagon shape and each wall has a brown door on it and the only thing in the room is a bed. i hear a voice from another room saying im tired and need sleep so i sit on the bed and i look in the corner and theres this person just staring at me and i dont do or say anything then he gets up and sits behind me on the bed. then he pulls out a knife and like carves into my skin and its rsally gruesome and should hurt but i dont scream and then he takes the knife says dont wory carves it down my spine and i wake up like terrified