I would say it likely depends on how long ago your surgery was. Initially, as the system learns its new function, urgency would happen quickly, as the small intestine has not yet been trained to absorb some of the water, etc. that the colon used to do. As the years have gone on, for the most part I average around 4-6 hours after eating; the only times this varies are with certain foods (spicy things, very rich foods, normally which I try to avoid). If you are in a flare, that could definitely be playing a part as well.

Sometimes, and more often than not, it's immediately. I was diagnosed with ulcerative colitis and had my jpouch in 2008...I've had pouchitis intermittently over the years...but have always had multiple bowel movements a day, even with taking Imodium and bentyl