Please don't try to kill or harm yourself. On a different thread, different time, another posted this, in paraphrase, and his advice is 'right-on.'
That you are suffering, protest_the_hero, is real. Just as real as any other medical emergency that requires immediate attention. If you had fallen down the steps and had a compound bone fracture and a concussion, would you wait to go to the doctor/ER? No, of course not. That and you'd be in intolerable screaming physical pain. Well, this is no different.
So even if your parents may not understand the situation (and I'm sorry if they don't) you need medical care, pronto. And Wrong Planet does care about you.
protest_the_hero: If you can, call a suicide # locally and tell them just what you posted here, even if you read it aloud to them. This is too much to handle all by yourself and that's not at all implying that 'you're not strong enough,' the opposite, in fact! Imagine if you were in a bad car accident with multiple injuries; of course you cannot take care of this yourself - that's why there are emergency medics. If you feel this bad (or worse) call 911 (& you don't need your parent's permission).
That being said, I hope you feel better soon. And you will!
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The ones who say “You can’t” and “You won’t” are probably the ones scared that you will. - Unknown