My son is a month old. I'm breast feeding most of the day but I do supplement. I get WIC and they put him on Gerber soy. And ever since then he hasn't been pooping as much. His doctor says we'll breastfed babies poop almost every feeding. Well he was until he started drinking the soy. Now it's been 2 days since he has pooped. And he keeps acting like he's trying to go. And he can't. What should I do? My sister is a nurse with babies and she said he can go up to 5 days. But I just don't see that feeling very well.