I am 9 weeks post op about, flanks and back lipo and still in extreme pain, could there be complications?

I had traditional liposuction by a board certified plastic surgeon 9 weeks ago. He removed 5000cc from the upper/lower abs, flanks and back. I am still in excruciating pain, so much so that I cannot wear a bra or function with pain medication. I have gone to see my primary care physician who prescribed gabapentin for the severe nerve pain but at this point I am at a loss. I am depressed! It is nerves firing and any pressure again my ribs from a bra leaves me crying from pain. Please help