I just need someone to talk to..

Im 18, almost 19, and I have major depression. I have a story behind it, but it's too long. Just say awful, awful relationship for 3 years. Little things here and there. Big things here and there. Deaths of loved ones and best friend. I'm alone now. I have both of my parents. My dads always gone on business. Mom is home alone all the time depressed. I'm always at work. I have my new boyfriend that I used to talk to, but lately I've gotten worse. Way fucking worse. I get mad at him for everything no matter how hard I try to fight the urge to argue. He got me out of self harm, but I still do it sometimes. Last time i did I told him and he got really upset. Not mad but upset. It's a really strong urge to cut myself again. I need someone to talk to.