Hi, Elsur.
Two weeks after my takedown, I had intense pain in the same area. I could not sit down without flinching, and if I stood up there was a flash of pain. This was accompanied by a sharp shooting pain that went straight up toward my navel, like an arrow into my j pouch. Also the in-and-out feeling of the sphincter. No blood or anything else. During my fifth week appointment, I asked my surgeon and he said it was very likely the tissues were inflamed, not pouchitis inflamed, but inflamed from surgery manipulation and frequent usage of the still sensitive sphincter muscles after so many weeks of an ostomy. He said it would calm down in the coming days and it did on its own. He did not give me any meds for it. It did calm down completely within a couple of weeks. It did not last long. I hope it will be the same for you.