What Causes Hip And Thigh Pain While Sitting?

My hip side and thigh pain early morning more and once i start my regular schedule work it becomes less but it is more when i am sitting in a chair or bed. only streching type pain exray sonography blood ra and urin test reorts are normalpy hip side and thigh pain early morning more and once i start my regular schefule work it becomes less but it is mire when i am sitting in a chair or bed. only streching type pain exray sonography blood ra and urin test reorts are normal