Ds2 is 7 days old, his last poo was on day 3 IIRC. It was a mega-poo, with the meconium starting to change colour, and some yellow streaks. He's had plenty of wees. He's breastfed, and I know that bfd babies can go for days between poos, but I've never heard of this happening in such a young baby before he's got rid of all the meconium.
Any experiences?