I Have Chronic Pain In My Right Side. I Have

I have chronic pain in my right side. I have gone through different doctors but have not been diagnosed. I've had injections, taken different meds for pain, but nothing seems to help. This pain has been going on since 2008. I was diagnosed with Fibromyalgia. I can't wear anything around my waist. The pain is on my right side only. I can't sit on couches or recliners. This pain is so excruciating at times until I can't eat. Please help me if you can.