There may be a ghost at my room

4 in the morning, 25 of december. I was making an all nighter working on some personal projects until I hear a eerily twinkling melody besides me. It was a music box. I have two music boxes and one started playing by it's own. I don't know how much time it played but I estimated about 20 seconds. I got scared but I brushed it over at the end.

Now returning to the present, yesterday I was with my best friend. We were in my room when I remembered that that happened, I told him about it because why not and just about I was telling him, some dolls I had in my shelf fell like a domino effect hitting my music box making it play a note.

It could be just a coincidence but what are the chances, my dolls have been in that exact shelf for a year or so and never had fallen before. Plus I have experienced other paranormal stuff, I actively see demon looking things I cannot exactly describe, I have been woken up by something screaming at me. My Tv has turned on on its own, I constantly have nightmares etc.

I swear I'm not delusional, experiencing psychosis, schizophrenic or anything like that. Please believe me