Son won’t poop

Title says it all. It’s been a week now maybe 8 days since he last pooped. He’s about to be 5 months old and is nursed. Literally feel so bad for him but he has shown zero signs of discomfort. He just keeps nursing and adding onto it. Plenty of wet diapers. At this point I’d 100% be okay if he blows out all over himself ruining clothes and even me for that matter just as long as he goes. We’ve tried warm baths, massaging his belly and around the butt hole, bicycles, etc. Going to call the doc tomorrow to get seen if he doesn’t poop between now and then. Only difference in routine over this time period is the tasting of puréed pears and prunes but even that’s been a few days ago. I am hoping he’s not constipated with a hard poo and unable to push it out. I just feel bad for the little guy.

Any advice, poop tricks, empathy, etc. would be appreciated.