Hello Txara: Thank you for sharing your concern here on PC.
I see this is your first post. So... welcome to Psych Central.
I'm sorry you are having this difficult experience.
Hopefully coming here to PC can be of some comfort & support.
We here on PC can't offer mental health diagnoses. Plus I'm not a mental health professional.
So I can't really say anything about what you're experiencing.
You mentioned you're 13. I really think what might be best here would be for you to talk with your parent(s) about what's happening & have them make arrangements for you to see a mental health professional. That's the way to really figure out what's going on.
You wrote that what's happening is scary.
And I can imagine that would be the case. You mentioned someone having suggested you might have schizophrenia. So I presume you have talked with someone about this. But it's important to share what's happening with someone who can actually be of help to you, not just someone who offers their off-hand opinion. Does that make sense?
Anyway... having written all of this... I'd just like to say I hope you find PC to be of benefit. My best wishes to you...