I eat oatmeal all the time lol. It doesn’t do anything for me. Wish it did! My body literally does not care what I eat. No matter what, it’s always thick and never wants to come out. I drink a buttload of water and a capful of miralax daily. I’ve had a defecogram, anal manometry, and scope all done recently. There’s no stricture, no prolapse, no pouchitis. I have no pain and feel totally fine except for this problem. My body just won’t let stool empty out. I’m doing some PT right now but it’s not helping. Looking into Botox for sphincter next.
Sorry the oatmeal does not work for you! If things get worse, I would recommend a catheter to empty everything out.