Can depend on age
First how old is the baby, breast or bottle fed? What is the baby's usual interval of bowel movements.
Infants can go up to 5 days without a bowel movement
. If it comes out soft (even thought large), then its not constipation
. If it comes out dry, hard like rabbit pellets or bigger then yes there is a concern. Usually more fluid, adjust diet
is the best. But all depends on age.