DD is not quite 2 weeks old. After nursing she grunts a lot. Sometimes the grunting escalates to some crying (usually a squall or 2 then back to grunting) and it's almost always accompanied with a little spit up (not stomach emptying, but something just about everytime). It sounds like she's working on a heavy BM, but she can do this for up to an hour. As soon as I pick her up she settles down, but if I put her back down she starts back up again. All of this seems to be worse at night (though that could just be me more aware of it because DH and I are trying to get back to sleep). Eventually she'll get quiet and we can all sleep, but all the grunting for how long it lasts just doesn't seem right. I will be calling the pedi after they open today for some insight from them, but figured I'd check here to see if anyone had any experience with anything like this. The only thing I can think of is she's having issues with digesting my milk, but it only started a few days ago and I don't know if that's something you'd have from day 1 or would develop over time.