For those who use or have used similac pro total comfort, did your babies get constipated or have hard poops? He has an appointment today but he hasn't pooped since Saturday and just a few minutes ago he had one hard ball of poop. Dark green, I'm going to ask about it at the appointment but was just seeing if it happened to anyone else. We have given him a little bit of apple juice (and don't come at me saying "he's too young for that" my pedi said I could give him some and he is my child) but it hasn't seemed to help any. Usually it makes him poop better. Thank you so much in advance.