Hello, can you tell me if anyone has experienced something like this?

Hello, can you tell me if anyone has experienced something like this? We've been on pureed food since 4 months old and have been doing well with it. Lately, my little one has been pooping like a cow, he's noticeably constipated but doesn't cry, plays well, and eats well too. Is this normal at all? Or should I treat it somehow?