Hi....pleaze consult any psychiatrist at the earliest as you may have depressive disorder. You need antidepressant . Talk to your parents to take you to a psychiatrist and your feeling not to live any more.  If you are really right then i would like to say that sometime parents are not aware of their child's feeling ad they themselves had been the victim of abusive behavior in their childhood. So plz your life is precious and take care of her . A proper family therapy also can help a lot in this particular case.