You don't have to give up working out while waiting to see if your current regime is causing you pain. You can walk, hike, or swim to keep fit in the interim.
I ate vegetables, nuts, and popcorn when I had an ileostomy. I never suffered with any blockages. The key is to chew your food very well. I think this is all trial and error with people. Take it slowly and when eating those foods drink plenty of water.
dx proctitis in 1987
dx UC in 1991, was stable until 1998
1998 started prednisone, asacol, pentasa, nortriptylene, ativan, 6MP, rowasa enemas and suppositories, hydrocortisone enemas, tried the SCD diet, being a vegetarian, omega 3s, flax, pranic healing, yoga, acupuncture, probiotics
2000 lost all my B-12 stores and became anemic
2001 opted for j-pouch surgery- now living life med-free