selling your meds while you are in active addiction yourself is the worst idea ever, even when I was selling stuff long ago, I never sold the exact med I was taking although I had several sources because I knew that I'd just increase the chance of taking shit from my own mouth.
I suggest taking long hot baths with some lope for the rls and valerian root for the insomnia, plus multivitamins && eating as much as you can, the vitamins will supplement the stuff lost by not eating due to the loss of apetite. pregabalin is scripted a lot, so if you can't get a script for it, maybe you can find someone who sells it easier than someone who sells oxy, although it is a very strange feeling being on pregabalin, it helped me a lot with aiding the symptoms