 [ Symptoms ] expected bm of 3 month breastfed baby my three month old is not pooping as often as he used to he is strictly breastfed and and is a lil bigger than most three month olds at about 17pds he used to poop everyday when he does have a bm it looks like diaherrea he has been very gassy recently and has horribly stinky farts which is new because they never really smelled before [ Disease ] there is very little fiber in breast milk so it is not uncommon for a breast fed baby to defecate several times a day even as you feed them or as infrequently as once a week it takes about three months for babies to grow a healthy bacterial flora in their intestines so gas pains are less common after three months but babies can still clear a room at times with some smelly ones there is not much you can do about this expect blame it on your husband