Another poop question lol

I feel like once a week there’s probably at least one post in here pertaining to poop lol 😂. So now it’s my turn, my little one is almost 5 months old and is exclusively breast-fed. We have tried rice cereal a few times just to get him used to a spoon per our pediatricians recommendations. But I’ve noticed for the past few weeks his poops are looking a lot different they are very thick and almost like mucus. I know that any yellow poop is good poop but I’m just wondering if any one else is having this kind of a difference. Nine out of 10 times when he poops like this it shoots straight up his back.