Hi TingTang
Welcome to SR
The fact is noone need be addicted simply for pain relief. As a disabled man, I believe that very strongly.
There are methods, medications and procedures available that are better suited to the recovering addict.
You may get some suggestions here, you may also want to take a look in our pain management in recovery forum...
Recovery and Pain Management - SoberRecovery : Alcoholism Drug Addiction Help and Information
The very best thing you can do is be honest and open with Dr about your desire to get off oxy and explore other pain management ideas.
If your current Dr is unresponsive or is unsuitable to you for any other reason, you should look for another. You owe yourself the best medical care and treatment you can find.
D