cariad - you have my sympathy when dealing with a grizzly and needy baby. I have been at the end of my tether on a few occasions where DS is permanently miserable, crying, moaning and nothing alters their mood - it's just draining. I find myself counting down the hours until DH gets home so I can hand DS over for my own sanity 
I'm quite lucky with regards to baby groups as there are 4 other moms I've befriended and we frequently socialise with each other. A very good friend of mine is also on maternity with her 9 month old so I have her for company too. Sometimes when DS is in one if his moods I find myself desperate to socialise with someone, be it friends or visiting family, just so somebody else can have a go at entertaining DS and give me a break.
And as for sleeping in separate rooms I don't think me and DH have shared a bed in well over a month!! I do miss it but at the same time if co-sleeping is the only way to ensure me and DS get some sleep then so be it. TBH the husbands who 'absolutely refuse' to sleep separately sound like idiots if they put their needs before their DP/DW and their child.
I've had quite a pleasant day with DD today which is surprising considering how tired I am. He had a 45 minute nap this morning and a 1.5 hour nap this afternoon. He had his afternoon nap on the bed with me and thankfully I managed to doze off and I had a 45 minute cat nap which isn't much but at least it's something.
Me and DS are now watching Deal or no Deal whilst I enjoy some chocolate and caramel biscuits with a gorgeous cup of tea.
When DD gets home we are going to try DS on sone baby rice and I've also got another parsnip and a carrot to roast and give to him 
I have spoken to a prospective babysitter on the phone today (who will be used if I get the new job) and I'm going to visit her on Friday. I'm dreading the whole prospect of having to hand DS over to someone else 