Oh Ses, it just seems tobe that time of year I think - I totally empathise, hope DS has settled and DH has done something for you this evening. I was there last week - DH went to his parents on early Sat am and got back in time for tea on Mon, he went to work on his Nan's house, so could was doing hard labour from 8am til ca. 4pm each day, but there's no electric so couldn't work around that - apart from that his Mum was cooking for him, he just sat around watching telly and getting some sleep - I was fuming that he didn't even bother to call [grr]. Plus I had PMT - not a good combination - I did manage to not cause a full blown row, but only because I'm feeling grateful that he's allowed me to give up work, so he's riding that gravy train at the mo
(the extremely tight budget we're going to be on is not helping!)
I do think that parenthood is a tough test of any relationship and add anything extra into that, such as stress, pregnancy, PMT and it makes it really tough. I hope your DH redeems himself tonight/tomorrow!
P.S. am really glad that I didn't make a big thing of it with DH 'cos he had spent some quality time with his Mum, Dad, Nan, brother, sister, neice and nephew - which is a rarity, since his brother lives abroad. His Nan then took a sudden illness on Weds and passed away on Thurs eve - very sad, but mercifully quick and we managed to get there on Thurs pm so DH could say goodbye, although she wasn't conscious. Funeral is on Thurs. feel now like after she had had nearly all her family around her for a weekend, she just had had enough 
Anyway sorry for that off topic, really feel for you Ses and hope things have perked up now!
Will post another time in response to your question Ginger, since really must do some ironing now!