DH and I have 2 DCs aged 8 and 6.
DH hasn't worked in years and says he can't find a job. To be fair, he trained in a sector that more or less collapsed in the financial crisis. But the financial crisis was a decade ago. He seems to do little during the day. The house is always a mess and it's far more than I can keep up with on top of quite a demanding job.
I can no longer cope and have given him his marching orders after what I think was some sort of a breakdown at the dinner table last night. DC aged 6 was being difficult and just sort of got up and started screaming, I don't even know what I was saying, just going on about how I couldn't cope and I was sick of it and I don't even know what. It was like I was listening to myself saying things and not doing it myself if you see what I mean?
DC aged 8 was in tears because, well, it was an ugly scene. (I've talked to both children since and apologised and reassured them, obviously I still feel like shit though.)
DH is trying to get some things in order today to go and stay somewhere else for a bit to give me some space. I'm from abroad and don't have any family here so it's not so easy for me to go elsewhere. We only have my income so renting somewhere else is out of the question.
Over the summer DH told me that he doesn't love me any more but wants to stay together for the sake of the children. I emphatically don't want to stay together for the sake of the children. What good does it do for them to live with two unhappy parents? 
But DH has no income and I don't make enough to run two households. Who on earth does?
Obviously I've missed out a mountain of back story but that's where I am today. I feel terrible. About everything. I don't even know where to start. I'm trying to get through some work to meet a deadline that's coming up this week. What should I do? Who should I speak to? Please be kind, I don't know what to do.