Stool leaking

I always get soiling and find some leaking stool in my underpants. Yesterday, my proctitis was acting up so I thought of taking a pentasa enema. I could only administer half of it. When I withdrew it, I found the nozzle covered w stool (sorry for the graphic). There are also large bloody flakes whenever I use the bathroom .I woke up in the morning and found soiling. When I was washing myself, I found my anus full of stool. I got shocked and didn't know whether that was incontinence or what. At work, I had severe d w knife-like cramps. By coincidence, I had an appointment w my GI. When I told him about the soiling issue and whether it was incontinence, he said let's hope it's just one time but if it recurrs, it has to be investigated. He said stay away from any enemas or suppositories as I can't retain any . He wanted me to use creams instead but these are useless. I insisted that out of experience, things will become worse. I asked about pentasa enema again and he said if you could tolerate it, that would be perfect.I was prescribed rifaximin two times again, lacteol fort (prebiotic ), and a new antispasmodic to stop d. I mentioned that Imodium is causing severe distention but he said try to take it every 2 or 3 days.