I to know how you feel. Everyone is looking at you to succeed and now you feel that you will be a let down. I have learn not to live for for other people, but to live for myself. Now you may have a life to take care besides your self, just believe in your self and God. Tell your parents what is going on with you. Dont wait. The longer you wait the harder it becomes to tell them. I know you are scared of thier reactions, but whatever they say does not determine your life.