Unlike popular opinion, fiber is not the answer for constipation. Water, water, water, water water. And for me, I use an enema bag when things are really bad from pain meds. It solves the blockage but to be honest, it does not solve the day-to-day need for a BM. I have found Senna to be helpful for the day to day.

Have you considered traveling for the surgery? There are many good healthcare providers internationally at reasonable prices and then a better timeline. Mexico? Portugal?