I have OCD and i think im becoming paranoid.?

You need to talk to your parents again. Make them understand that you are having a problem and you are coming to them for help, not doubt. You also need to see a doctor. I don't know if this helps you or not, but you are not in an alternate reality. You're just confused, but there are ways to fix this. Please don't kill yourself. Maybe writing a letter to your parents will help you to explain exactly how you feel without them changing your mind while your still explaining. If they still refuse to take you seriously, talk to someone else. And if you're ever feeling like you're going to kill yourself, don't be afraid to call the police. They will help you.