Bilateral shoulder and groin pain

Have bilateral shoulder and groin pain since 5 years. MRI of lower back was normal. MRI of left shoulder depicted Subdeltoid bursitis. ERP, thyroid, b12, crp, hlab27, hba1c, RA ,b12,d3 All pathalogical tests came out normal. Difficulty in driving, walking, lifting weights. Inflammation in shoulder and hip joints. Still undiagnosed. Seems like PMR but doc said I am to young for that condition. Stiffness in neck, shoulders and groin. Cannot run, can't do normal exercises. I was a exercise and gym freak and couldn't do anything about it as of now. Consult a series of doctors- orthopedists, rheumatologists, neurologists,gps, ayurvedic and even homeopathic doctors. Still undiagnosed. No one knows what is causing this chronic pain. All tests seem normal. And it pains only in the regions where polymyalgia attacks. I don't know what it is exactly though.