Oh I'm absolutely expecting there to be a problem at some point - the dairy thing has been a problem for babies in my extended family for years (although not for me or my brother), with slow introduction when they were 4 or 5. My boyfriend has UC, probably brought on by dairy eating when he was a baby. He's dairy free now, but the damage is done. I'm on lookout for all the symptoms, but until last night there was nothing. She's not been a particular screamer or unsettled even from the beginning.
I'm going to try a tiny bit of formula at the weekend, in a bottle of expressed milk. Would be good to know about any allergy or intolerance before we start weaning, because then at least I know that I'm stuck with breastfeeding longer than I want to. It would be easy to be dairy free in this house - all the alternative products are already 'found' and in the cupboards due to himself.
Last night she slept fine, there was a LOT of farting then no more back arching, although I put her in my bed at 1.30 because I couldn't be bothered with getting her in and out of her sleepyhead, so that might have helped her feel calmer in general. Just fed her lying down a couple of times in the night, and all was fine. She slept 9.30 - 1.30 (with a couple of soothes), then through til 4.30, then 6.45. So, about a gazillion times better than recent nights.
I wonder whether eating lying down helps her too - she seems to get less windy, probably because it's less gulpy for her.