then the similac might be the problem... try to get a better advice to the pediatrician to make sure your baby will be fine coz even us adult having a hard time to poop is sucks @yolee

yes I'm breastfeeding and formula I'm giving her both since she was born but since I changed her from enfamil to similac she started to have problems

are you breastfeeding? coz my baby was having a hard time of pooping when I give formula... but now I breastfeed him his not having a problem of pooping anymore