urgency would almost suggest to me that you might have cuffitis, ie similar symptoms to ulcerative proctitis, and if they left a little of rectal cuff which they often do, or did, not sure if they still do, then its not unheard of.
the cuffitis would best be treated with suppositories. ive never had it, but I ve read numerous patients battling this.
I also think I mentioned this on your other post, I am not sure Metamucil wafers might be working for you, think of it this way if things are flying through, does your body have time to break down the wafers, it might just be better to suck it up and mix the powder and see if that works better for you. it might not be the same but decades ago, they introduced fiber pills this was way before they got fancy with wafers and what I noticed was the pill in the bowl, that's when it became clear to me that the powder was a better idea.