Hello and I am sorry your going through this flare up. I think the pain meds are ok but they are for pain only and will not help with the inflammation or whatever is going on inside you. Continuing to go up to a stronger narcotic is not going to be the answer IMHO.
The narcotics can and often do cause constipation. You stated you had a brief period of 4-5 days when things improved, may have been the side effect of narcotics but just a guess.
Never good when you start popping narcotics in place of getting to the real root of your prolbem. I would kindly suggest you see your GI and look at your next option.
Bless you and keep on posting.