So I've been having issues with my stool caliber. Not really sure when it started but I noticed my stools seemed flatter than normal. The only other symptoms that I've had is occasional constipation. I'm scheduled for a colonoscopy soon but I wanted to check to see if anyone had similar issues and what your outcome was. I have a feeling it could be related to my prostate but I'm unsure. Has anyone had an enlarged prostate cause changes in stool shape. I'm a 29yo white male.