I am 35 and a bit weeks and have just had the most emotional-wreck 2 days of my pregnancy. I'm normally not an emotional person at all, and for the last two days I've not stopped crying. Today, the world is a good place again 
I put my emotional collapse down to over-exertion through staying at work too long (am pg with twins, so although 'only' 35 weeks, I am enormous, can't walk, can't sleep and know I will have these babies by one method or another within three weeks). Then a clever bod at work pointed out that as well as all that pregnancy stuff that's going on, actually I am likely to be emotional just because these were my last few days at work. I've spent the last 10 years building a career and structuring my life around going to work everyday, and suddenly that is stopping. Such a change is likely to cause a few tears!
I think moving house has probably added to the emotional stress because its a big change. But it is also normal to cry a bit during pregnancy anyway.
My advice would be to 'shrink' your world a little bit so that you know you have somewhere to bring your baby home to. You don't need a whole house - you could just start with your bedroom. I have recently sorted out my bedroom so that I know I can cope in here with my babies. I don't care about the lounge (yet!) or the kitchen. I know I can cope with my babies in my bedroom/bathroom, and my husband will just have to deal with everything else. Makes it all seem a bit more acheivable, and I'm sure a few more rooms will become more organised over whatever time I have left before the babies arrive.
A long post, but I wanted to describe how I feel so that you didn't feel alone. I guess my advice is to start with one room so that you know you have the minimum needed to cope. Then expand from there if you feel capable/have time. If not capable/no time, you'll just have to hide in your one room with your baby and let others deal with the rest 
Good luck!