My 4months old baby poops after 10 to 12 days ,she is on breastfeeding only,is it normal?

A. Breastfed babies, especially if they have not started solid foods, can easily go two weeks without a poopy diaper once they are 2-3 months old. Breastmilk is exactly what your baby needs, and so there is little waste product left for the baby to poop out. Exclusively breastfed babies are almost never constipated.