Sounds like me! Most of the time the stabbing pain or discomfort is gas but I take Tylenol only for the pain (tried Vicodin and it did the same thing to me as you). Also, I put the heating pad on that area for a few minutes when I can - helps!
Now - can I ask why you are not using the rectal meds any more? I consider myself about in remission - maybe 90%. First symptom to get worse (or return) is left sided discomfort. Before it gets to be pain I use the rectal meds a couple nights at least and so far it works!
ElaineNY