Thank you for your query at DoctorSpring.com
From the history and X ray done I would give differential diagnosis of pelvic dysfunction which results from trauma our gait our posture during standing and day to day activity, especially if we sit with cross legged. associated symptoms are iliotibial band tightening. these conditions are purely amenable to physiotherapy and correction of mechanical factors. as a rheumatologist I would suggest few test to rule out inflammatory condition to be precise, please get HLA B 27 by PCR, ESR, CRP, Vit D 3 status.
X ray dorsolumbar and lumbosacral spine anteroposterior and lateral film and revert back to me.
Feel free to discuss further,