I too also suffer an awful lot of pain, where it stops me from working. Painkillers don't reliever the pain anymore, as I have gone immune to them for taking them for so long. The pain I tend to get is more on the left side, as though someone is stabbing me, and the pain travels through to my back, like a knife going in and out. It can be very excruitiating. I also get alot of swelling when this happens also.