How to deal with depression during pregnancy ...

I've never been so depressed in my life. I feel like I'm a bother to anyone and everyone. I feel like I can't do anything right. I feel like no matter what choice I make it's effecting the other person in a bad way. I feel like I'm alone. I have no one to talk to. I cry all the time, not just a quiet cry either. I have a hard time going to work but I'm the only one with an income right now. And I feel like I'm going to get fired for not going in. I try to hurt myself 75% of the time. But I know that's not an option. I'm struggling A LOT..