It would help if you could tell us more about what type of pain you are in. Have you had any treatment, detox etc...
Most state programs require that you have 2 years of documented clean urines before they will let you out of the program - which is why they start testing you right away. All drug treatment programs have random testing that's just a part of the process that you can't get away from. Bottom line if you want to keep your license you do what they tell you. There are lots of ways to treat pain without narcotics! 2.5 years ago I was in so much pain I could not walk - Now I have no pain and no narcotics! But you have to be willing and teachable that's what recovery is all about.
Ps remember the boards are charged with protecting public safety which means as long as you are using narcs for any reason they are gonna be on you like white on rice. Also remember that PAP is a voluntary 100% abstinance program ( no drugs, no ETOH, No benzo's or sleeping pills not even benedryl.) You could opt for probation but you would have the same restrictions, a DEA investigation into your diversion (which you pay for $5000-$10,000), and you may face criminal charges. It's a lot to think about so really think it through.
If you were diverting and got caught most lawyers won't touch your case except to tell you to do what they say!
You can write to me here anytime with your questions and frustrations - I will try to help.
Peace and Namaste
Hppy