Put on soothing music, fill a hot tub, turn off the lights in the hot tub, and breathe deeply. If that doesn't reduce your pain to a manageable level, go to the ER or an Urgent Care. If you can't manage the wait to be seen, call an ambulance. Make sure you know exactly what they give you to inform the anesthesiologist in the morning.

The combination of meds maybe worked well but since your Oxy is gone... or you may simply need a higher dosage.