I hope something works for you. A word of caution about the oxycontin, though....it is (as you may very well know) highly addictive. Typically, it will work great for a while, and then you will need more of it because your body has gotten used to the dosage. If you take more, and then more, it doesn't take long for your body to become addicted.
It's an opiate, and addiction to this is very dangerous and damaging to your health and well being, and another dangerous thing is that a doctor may decide to cut you off from it due to your getting addicted and then you are in trouble. So, use it by all means if it helps you, but please be cautious. Don't take it every single day, and try never to increase the dosage.