Constipated baby TMI TMI!!!

My baby hasn’t pooped In about a week. I’ve done a couple things my parents told me to try and they don’t seam to work. Today he was pushing so hard and crying and I looked and could see poop trying to come out. like a nickel sized around. Is there anything I can do to help when that happens? I tried bicycle movement with his legs and putting his legs/knees up like he was squatting. It wouldn’t come out. It just went back in. He taking a warm bath now. He’s had Kyro syrup in his bottle. We’ve tried a little bit of prune juice.... Also fed him the baby foods that start with p. Because I seen to try that on Pinterest 🤷🏼‍♀️ it doesn’t seam to bother him until he tries to push it out.