My newborn (currently 6 weeks) sometimes goes a few days without a bowel movement. It seems like this makes her uncomfortable and she sometime looks like she's trying to get something going (she has an obvious pooping face) but after a few pushes gives up on it. Is there anything we can do to help her out?
Additional info. She is breastfed with quite a bit of formula supplementing, we use Costco's store brand formula which makes a big deal about having a lot of iron.