I agree with C/D, hon. An internet message board is no place to talk these kinds of feelings out. I can tell from the way you write that you are articulate enough to be able to express your feelings in person to a professional and that is what you should immediately consider. Feelings of worthlessness and hopelessness can lead to suicide eventually if not addressed.
Give it a shot. What do you have to lose?
Give it a shot. What do you have to lose?