My boy is 16 days old only but no pooping.

A. hi usually it is normal among young babies to pass stool once in 7 days or 10 times in a day please keep breastfeeding your child as per his or her needs as you are nursing mother, eat easy to digest food give Massage to your child daily give Massage on stomach in clock wise direction with firm hands move your child legs in cycling motions maintain good hygiene