Just because you have documents proving your pain does not mean the doctor is in any way obligated to give you anything at all other than a bill. (S)he will treat you as they see fit.

The only way you'd have a case if you could actually prove the doctor put you in pain (i.e. surgery without adequate anesthesia, knowingly gave you medicine that would intentionally cause pain, etc.).

Just because a lawyer is willing to take a case does not mean you have a case at all!

There is no law specifying that you are entitled to narcotics for pain relief, unfortunately.

This is just a tip, but if you're not getting the relief your sense of entitlement tells you you're worthy of, then maybe you need to work on your approach...

-yawkaw