From last 3 years I am feeling pain in lower back and buttocks, continuously following rhumatologist, hlab27 neg ,MRI of si joints and pelvis was normal, bone scintography normal,even ESR CRP not raise in last 3 year , but I have pain in buttock lower back below knee joints , no swelling, no pain pain when press affected area , yesterday I did a x ray of pelvis as prescribed by doctor,in last 3 year duloxitene,pregab ,gabapentin , clonazap have taken but no relief , till rhuematologist diagnosed it as fibromyalgia, BJHS , but I have pain only in low back and buttocks when sit , pls look my x ray