During the first 4-6 weeks, it's expected for a breastfed baby to have multiple bowel movements a day. If they are not having many or any at all, it is a cause for concern. While there are certainly breastfed babies who may have less and be an exception, if your child has stopped having bowel movements before this age, it's worth investigating with a doctor or IBCLC. After six weeks, breast milk tends to lose its laxative effect, and it can be completely normal to go multiple days (up to about a week or so) without a bowel movement IF baby doesn't seem uncomfortable and is having adequate weight gain.