I am so unhappy at the moment and it is really getting everyone down.
I have a 10mo DS and 2 older DSes and lovely DH. But I am angry, tired and shouty all the time. 
We moved house when I was 38 weeks pregnant and there is so much to do, every time DS3 has a nap (rarely) I end up tiling the bathroom or wallpapering the hallway. Well, partly as he wakes up halfway through - then I take 3 days to finish the job. DH works full time and does do his share of the kids but can't DIY if his life depends on it so I have to do it as we have no money to get someone in.
I am woken by DS3 at least twice a night, often 5/6 times. DS2 is clingy too at the moment so he wakes up at least once. DH tries to deal with it but DS2 always wants me and since DH can't breastfeed he can't settle DS3 either.
I am really horrible and snappy, and positively scary at night. I shout at DH and the kids, last night I said how much I hate this fucking family and I am close to walking out and how come they are all horrible and I don't want this anymore. I am so upset now - I can't believe I said those things and poor old DH is at the end of his tether. He has been so understanding and kind and he says he is now scared to go to bed and is scared of me at night as he doesn't know what I will say and it is hurtful.
I go back to work part time in a couple of weeks and can't wait to get back.
I don't know what is wrong with me - I have been like this for a couple of months I suppose although it is getting worse. Is it possible I have PND? I don't really feel unhappy about the future, I feel quite positive about it - but the here and nowis horrible and I just want it to go away - I keep thinking about getting in the car and just driving away and not coming back.
I know I amstressed from the constant drudgery of life atm, but is there anything I can do? I keep trying to be nice and it just doesn't work. 
Anyone got any suggestions?