Unless it's like my case, a nutritional deficiency or some other case. If you're lucky. 
Schizophrenia is scary, and comes in many different varieties. I was lucky that mine was just pyroluria instead of anything else, because that time was the worst of my life. At worst I just face it mildly if I go a few days without fixing it. I think it was around your age that I began losing my mind the hardest.
Lets hope it's not the case.
I didn't think I was either, it seemed "too extreme", but the more people I spoke to about it, the more apparent I was alone in feeling many of the things I experienced. As much as I tried to avoid the label, it kept becoming harder and harder to disprove as it progressed. I was thinking it was just a product of excess sleep deprivation, but then I saw it was actually it's worst after I was well rested.
"How old are you?"
Mid twenties. I've only been sane for around a year and a half, actually, and many are reluctant to believe it.
Edit:
"On another note, if the avatar is any indication, Turncoat is quite physically attractive."
Not all schizos have voices in their heads. It's characterized by hallucinations, which can be any sense (even scent!). The negative symptoms and symptoms can appear as many other disorders until the crazy decides to reveal itself. They were convinced it was ADD and Depression when I was younger, but man were they wrong.
The age isn't something that's always the case across the board. Sometimes traumatic events or even just variation in genes can cause it to come on earlier. Another schizophrenic I know had hers kick in at age 9 from living a fairly hard life.
From my own experiences, I became rediculously objective and skeptical, but that turned out to be me defending against aspects of delusional thinking passively. I'm extremely prone to practicing self-conditioning, before to not allow myself to be imperfect to the best of my ability, now just because it's useful and hard to drop.
I'm not going to say schizo is or isn't the case for you, because I don't know. I'm mostly saying what I know on the subject from my own experiences on the matter, and remarking that how you see things seems to have some parallels.
I had good days and bad days. Good days I was just a bit quirky, very energetic, and highly phobic, appreciated among company for "outside the box ideas". Bad days I didn't talk to anyone and hid in my room while experiencing hallucinations and pretty horrid thoughts that argued with eachother. For classes at college, I rode my bike to class. Something as normal as a car passing by closely could set me into a panic attack, accompanied by hallucinations that'd make me use up my sick days if they hit a certain extreme.
I also manifested some comorbidity of OCD and OCPD (that's been around as far back as I can remember). Had all sorts of stupid thoughts about things, like having to make the world conform to a grid only I could see, volume had to be divisible by 5, food that's eaten in pieces (M&Ms, Goldfish, etc) had to be eaten in twos, one for each side of my mouth, couldn't step on cracks in the floor (made airport trips pretty stressful), and a lot of other nonsensical preoccupying thoughts. I wasn't obsessed with those things happening undesirably causing anything like some people who are prone to superstitions, but I couldn't allow it because it was "wrong" or "imperfect".
My nightmares were practically Cthulhian. Shiny pearl spiders without eyes boring into people's bodies to puppeteer them, laying eggs inside of them to keep the species going. Sentient patches of skin that cut off your own and sew itself into it's place, releasing a carrion stench that attracts other predators. Mosquitos with sharp jaws that inject an insanity toxin that drives people into homicidal rages so they can consume the carrion that follows their path of destruction. Creatures with skin that droops off as if it was for a larger creature that simply kill without reason, even when encountering more of their own kind. No matter how much I tried to warn people in the dream, it was the Cassandra Complex every time. That alongside insomnia meant I never really had restful sleep.
I try to keep everything objective in order to keep my head on straight, which I'm sure is why I prescribe more easily to something like Nihilism.
Unless you're prone to hypochondriasis, it might be good to do some research on other's case studies on the subject.
Ever hear of the book "The Center Cannot Hold"? At the very least, it's a fun read, being a first person account on the subject during a time it was less understood.