Does this sound like it could be a reaction to nuts?
The day after I ate a whole load of cashew nuts, 10 week old DS2 was generally miserable, really windy, produced loads of skid marks in nappies but didn't really poo. He had a very fussy evening and couldn't sleep due to the eventual arrival of a poo just as he was going to sleep. Today has been the same, but his poo smelt strong and unpleasant. He has been weeing more than usual. He has been frequently choking and gagging when feeding, which he used to do a lot before he had his tongue tie revised, but which he rarely does now.
He also has a bit of a gunky eye (may not be related) and a little red patch on his head where the cradle-cap type skin has flaked off. (He doesn't really have cradle cap, just a few flakes of skin).
The only thing I ate which was different from my usual food was the cashew nuts. I already avoid dairy, wheat, soya, dried fruit, hazelnuts, peanuts, sesame, sunflower seeds, coconut, egg, melon, cucumber, squash, kiwi and banana. I ate cashew nuts most days during pregnancy.
I think DS2 is also dairy-intolerant because as he has similar symptoms when I'm eating dairy, but they're greatly reduced when I'm dairy-free. I'm confident I didn't eat any dairy by accident on this occasion as I'm lactose intolerant so I'd definitely have noticed it!