I want the baby but...

I want my baby so much it hurts but the last week or so, since I was hospitalised for coughing up blood (I'm fine btw) all I can think about is money. And the fact that I barely get on with mybrother and his girlfriend and they atmosphere in my house is so stressful that I am not happy raising a child in it. The problem is, I'm a single mama-to-be and I don't earn an awful lot of money so I don't think I'd be able to afford to move out. Besides the dodgy atmosphere, I feel like I won't or am not getting the emotional support I need. I understand I've known since 3 weeks that I'm pregnant because that was the week my period was due so I tested on the off chance I was pregnant. I wasn't even suppose to be able to get pregnant so this is my little miracle but I feel a bit like I'm on my own. I have a permanent job but I don't like it anymore. They hired me making out I'd have a full time role but most days I just surf the net because no one has any work for me. I can't spend the next 6 months doing that, it's mentally draining.
What do I do? Shall I just bite the bullet and move out? I don't know what to do. I cried last night because I'm stressed. The baby doesn't need this and I certainly don't either!  X