Lolwat,
The good news is that schizphrenia and other serious mental illnesses rarely present in someone so young. You may just be/have been an anxious kid! I would know, I certainly was
Most of what you're describing seems to be happening at night...I would guess that
a) you have an active and healthy imagination--perhaps one day i'll watch you win an Oscar or a Pulitzer on TV!
b) You are smart and inquisitive--perhaps you're overthinking things...some people can visualize--I mean literally see--their fears and 'hearing voices' really isn't that out of the ordinary when a smart mind races as much as yours seems to.
c) Lack of sleep or true insomnia can make the 'imaginative' side of your brain more active--for me it took over 20 years (from 5 to 25) of being a chronic insomniac before I was finally put on a med that worked.
d) Kinda like doing magic mushrooms without the magic or the mushrooms, it is PERFECTLY NORMAL for static objects to appear to 'move.' You are not seeing things it's a trick of the eye. Test this by finding a pattern and staring through it...the lines will appear to wiggle or move in and out.
e) Stop smoking marijuana, it is not good for developing minds and believe me (or look it up) your brain is still developing through your early twenties. Smoking pot, even occasionally, can have long term effects on your intelligence and stability...So stop!
f) Stop being so self-focused and obsessing on YOU. Seriously, find a hobby or a habit that cn occupy you when you feel like freaking out. Reading, doing word or math games/puzzles, video games, whatever. Obviously, your making a cycle you're stuck in worse.
Okey-dokey, that's all I've got for now. It really doesn't sound like you have anything to worry about (easier said than done, I know). But once and a while we all need a healthy dose of prespective and reality. Ask your parents to let you volunteer at a soup kitchen or mental health service so you can see what real illness looks like. (or find another cause you believe in and join it!)
Trust me, it will make you feel better about yourself and might even give you something to focus your positive energy on.