I think my room is haunted

Every time I try to fall asleep, I start feeling very disoriented and my head spins like crazy, like I’m about to throw up. It happens specifically when I’m lying down and trying to sleep. I also get this strange feeling that someone is watching me. It only happens in this room and on the stairs. I don’t feel like it’s anything aggressive, more like just a presence. Some time ago, I noticed a handprint on my window, and you can’t reach my window from the ground, so I have no idea how it got there. I don’t know if my room is haunted or if I’m just overthinking it.

In summary, I feel dizzy and nauseous when I try to sleep, and I sometimes feel like I’m being watched, which makes me question whether something strange is happening or if there could be a logical explanation.