Try a doctor, they can refer you to a professional who could help you (though I guess you'd have to pay cos you're American). You could always try talking to your parents/carers, I know I always feel better when I have a heart to heart with my Dad. Or a teacher you like, or other relative. You could even talk to your friends more. Or, you could distract yourself by getting a hobby or something, exercise is supposed to make you feel better (though I'm a rather portly person who has no experience of this =P)
Hope this helps!