Baby poop

Sarah • Junior 💙👣’18 & Josiah💙’20

Hi ladies, my son is going to be 5 months in 9 days and he recently started having slightly firmer poops than the normal peanut butter/claylike consistency. And now he’s having a hard time pushing although the poop isn’t hard. I haven’t changed his formula at all. Just wondering if anyone would know why this is happening or if any of your little ones are going through the same thing? Thank you.