I agree with Montana. You didn't say how old you are, so I'm assuming from your response above that you're am minor. If your parents won't book an appointment with a psychiatrist, no problem, go see a family doctor or general physician or whatever they're called and tell them exactly what you told us. And if your parents still refuse to bring you, go to the emergency department of a local hospital and tell them what has been going on.

I'm not convinced this has to do with your mental health; but I'm not a medical doctor, and you need to see one ASAP, because those symptoms sound frightening and it'd be good to have some answers.

RJ