I decided to cosleep with DS2 in advance of his arrival because with DS1, we spent so much of our precious nighttimes settling him back in his basket after hour-long breastfeeds that it was hardly worth going to bed at all! Plus, of course now I have DS1 to look after during the day as well as the new baby. So.
DS2, now 4 weeks, hasn't been in a cot at night at all - every night in my bed. DH has decamped to the spare room because I needed the space, and he was getting disturbed - I need him awake to look after DS during the day! (DH is actually in the other double bed with DS1, but that's another story...
DS decided he didn't like his new bedroom - we recently moved house and he's still a bit disturbed.)I really miss DH being here with me at night, as it feels like I'm struggling with the baby on my own. But there's no point in both of us being exhausted.
First week in bed with DS2 was fantastic - he lay snuggled up to me, I found the bedclothes issue ok and he latched on quite well while lying down. I fed him sitting up in bed at least once a night to ensure he was getting a decent feed. Then after a week, he sort of exploded.
He has terrible wind - sometimes he's farting for minutes at a time (and they SMELL! Is that normal for a tiny baby?) and farting usually seems to cause him pain.
He writhes, pulls his legs up, screams, etc. His poos went from effortless, several-times-a-day jobs to once a day or every other day and they also cause him pain. (They're normal-looking yellow breastmilk poos.) He's particularly unsettled when he hasn't had one for a while. (he is gaining fine as far as I can tell, btw.)
The worst of it is that cosleeping isn't helping him to settle! I know I had a rosy-tinted view of it, but I did think it would make things work out ok. I don't think I've ever read about someone who coslept and still had nightmares with a small baby at night. Basically, if he's unsettled (which he is every night now) he doesn't want to latch on lying down (and often, not in a cradle hold on my lap or even laid over my tummy, tummy-down). He gets frantic, mouthing at my nipple but not latching, and taking in a lot of air. He also lets the nipple slip out of his mouth a lot, even while feeding in a more 'traditional' position, so I need both hands - one for the back of his shoulders and one to keep my boob in place. (Ok, I know this is to be expected but after breastfeeding DS1 in every conceivable position and managing at least one hand free to internet, read, eat, etc, it's doing my head in!
)
So feeding lying down (the whole reason I decided to cosleep) doesn't work when I really need it to. Sleeping alongside him doesn't settle him - he'll go to sleep after a feed if I'm lucky and within half an hour, he's got the gas pain and is writhing about in discomfort. 
Last night was the worst - he was completely awake - at first not in pain, just wide-awake and ready to party! And then got gradually more and more overtired and just couldn't sleep. I was up with him from half eleven til about 5, I think. DH came in at some point, stuck him in an upright baby carrier and walked him to sleep (I had half an hour lying next to DS1 instead) and we eventually managed to get him out of the carrier and onto the bed next to me, though gas woke him up a bit later. 
WTF do I DO? I feel completely desperate because it feels like I'm already doing everything I can! Cosleeping wasn't something I entered into doing lightly - I think I'm quite far along the 'attachment spectrum' but still don't want to cosleep forever - I feel pretty ambivalent about sharing our bed for longer than a few months and we were hoping we'd be able to get him into a cot, gently, by about 6 months. But DS2 now is extremely reluctant to be put down asleep in a basket downstairs for a nap, so I don't rate our chances of getting him into a cot too highly.
So I feel like I've already used up all the tools in my toolbox. I bf on demand, usually every 2 hours. We're using slings and carriers. He sleeps snuggled next to me at night, and usually has naps on my lap. So what the feck more can I DO?
I feel ill with lack of sleep today.
And the worst thing is, I'm not yet doing all this alone but will be from next week. DH managed to work from home for the first couple of weeks because the baby was born at the start of the uni vacation, and is now coming to the end of his paternity leave. Yes, that's right. I'm whinging about all of his and DH has actually been at home all month!
I just don't know how I'll cope with both of them when he goes back to to work. DS1 is being, ahem, challenging at the moment because of the baby and the housemove, and needs a huge amount of attention and fuss. I feel like I'm not bonding with DS2 enough, and breastfeeding with him is such a different experience than it was with DS1 that I'm constantly thrown and wondering what to do. And now none of us are getting any sleep. 
Don't know what I'm looking for, except maybe another parent who found cosleeping wasn't the magic answer at first. Does it get better?