Seizures are Scary! Have you asked them why they think you are asking for pain relief for the 1st time in 4 years? This is the first time the OTC pain meds have not worked. Some take Flagyl or other antibiotics together. Just saying that they are not exploring all of the options yet. The doctor gave you steroids and you still have blood in your stool! If it is cuffitis I bet that is not picked up in a CT scan. That is why more tests are ordered, right? My cuffitis caused blood and pain. Sorry I can't help you out other than doing all that you are.
I feel fortunate that my pcp doctors have prescribed me pain meds the last 7 years.