3 Day Old Newborn Not Pooping. As long as your baby's poops are soft and passed without a struggle, you don't have to be concerned. Most people notice a pattern in their bowel habits.
Also, newborns that poop seldom may be uneasy up to a few days before pooping. As long as your baby is eating and happy, they are good. For bottle-fed babies, that schedule is one to two times a day.
Babies begin pooping regularly a few days after birth.
In babies, constipation is when there are hard stools (poop,poo) and it is not a problem that they go infrequently (often up to a week).
A "normal" pooping frequency is anywhere from three times a day to every other day. Baby not feeding as much/not hungry. In toddlers this is a problem. It is not necessary to give the baby a laxative, fruit juice, syrups or any other "helpers." In fact, attempting to force bowel movements can have harmful consequences to your baby. A baby that is two months old may only poop once a day (Easybabylife.com). Some babies don't poop for a day or two -- even a week.
After the baby is about six weeks old, he may wet only five to six diapers per day, but if so these diapers will be much wetter and heavier. Baby not feeding as much/not hungry. Additionally, if the newborn is fed formula milk, there should be a diaper with stool every day. Formula-fed babies can go several times a day to once every four days. Hard baby stool prior to solid food is the most obvious indication of constipation in babies. Also, newborns that poop seldom may be uneasy up to a few days before pooping.
After the first couple of weeks, babies usually settle into a pretty good pooping routine. A baby that is two months old may only poop once a day (Easybabylife.com). It's also about how tough it is for them to do it.