Was also going to just read and post later, but wanted to say hi to Looby and sorry to hear that things aren't great with your dh. Febes is right that a new baby is a huge change in life for both of you, and I know that it took me ages after having dd to realise that my dh was finding the adjustment really difficult as well, even though he didn't have to recover from labour, breastfeed, be up all night and look after a small baby all day every day, etc etc! For his own 'new dad reasons' it was a hard time for him too, even though we were both happy about dd.
So I suppose I would say, when you talk to him about it, it might help to present it as a joint problem of adapting to life as parents, rather than you having a problem caused by his behaviour. For us, learning to take this approach was the turning point at which we started to recognise ourselves as a couple again after having dd. I guess that way of looking at things might not be such a big deal for your dh, but I wanted to mention it as it took months for me to think of things that way and it was a really big help. And yes, definitely talk to him when he's not had a drink (mine has this 'coping mechanism' too, isn't it great...)
But YAdefinitelyNBU about feeling 'pestered' into relations sooner than you are ready. Childbirth and especially a cs is a huge thing and he does need to understand that. I have been very lucky to have straightforward deliveries both times - but it still took us about 4 months to get round to it last time, and looks like it'll be similar (or worse!) this time. I'm afraid your dh needs to accept that it's perfectly normal for this to take a while. But I think it actually is difficult for men to understand what a huge upheaval the whole thing is for women - sometimes they're just sincerely not getting it, rather than being w*nkers. For example I was astonished after having dd (and again now, to a lesser extent) by how emotionally the hormones caused me to react to EVERYTHING, and of course dh found that difficult too - but he also really had no idea that it was a normal consequence of childbearing, he just thought I'd turned into an irrantional ranting beast . It's not easy!
Anyway, I hope you can work things out with him and feel a bit better soon .