Let your parents know that you need to talk to someone in person about these problems. They can make an appointment for you through private sources or else community resources. If they still think you are joking, let them know you must talk to someone, and go on your own -- to a counselor at school, or to a teacher you trust. I don't know where you live, but most places have resources set up for people who need to talk, and that is what you must do. When you find someone to listen you'll be on your way to getting help with these problems. I'm glad you posted here. It's still early today; there are plenty of people here who will listen.