I have 2 disectomys in 5 years on the last disc.. On my left side I have still considerable pain and now after my last op a year ago I can feel considerable discomfort at the top of my ass when walking.. It can be relieved by sitting but after about 10 steps it back.. I have had MRI and it is showing scar tissue... Is a nerve pressing on this area? Or is the disc bulging again??