How can i get over depression?

it seems lke everything i do, i just have bad luck. every job i get, i get fired, i dont really have anyone who understands me or what im goin through. my parents were never there for me when i was little, and they still arent now, i just found out im pregnant, and only 17. my boyfriend dosent want to keep it, but i dont want to kill it. i live in an extremely racist neighboorhood, my life is hell right now and i really have no one to talk to. someone please help?