Why do I have severe pain after lipo 8 weeks post op? (Photo)

I had lipo to my back , abdomen , with Dr Yily in the Dominican Republic . It's been 8 weeks & I'm still in a lot of pain , mostly it's when I'm trying to get up from a nights sleep . As I'm attempting to slowly pull myself up it literally feels like a layer of my skin is being ripped off my back , & other times a constant burning feeling ten times strong . Can anyone tell me why Am I still having this degree of pain at 8 weeks post op ? I take Gabapentin 3x daily & oxycodone 1/2-1 pill.