kidney cancer survivor in pain

hi,
i was diagnosed at 18 with renal cell carsinoma last may 09 and had a partial nephrectomy 2 weeks later. there were a few minor complications post op, (infections) as far as i know they got it all and im cancer free, however, since surgery i have had sever flank pain almost immobilizing me, it is constant and follows with severe nausea. i am currently on pain medication and phenegrin for the nausea. i have taken gabapentin and lyrica and neither worked so the doctors ruled out nerve damage. i have been told that i have excess scarring on my kidney and that it is common in mediteranian skin (im italian) i have had ct scans and blood work and everything else you could immagine and i am tired of pain medication and have been taking it way too long. (they are not working and i do not wish to up my dosage) my question is, can excess scarring be causing this much pain and how do i fix it. and what else might be causing this pain