Suggest Treatment For Pain And Weakness In The Shoulders, Hips And Thighs

I have pain and weakness in my shoulders, hips, thighs and gluteus area (when sitting). I was diagnosed with hip tendinitis and hip bursitus in July and have completed weeks of physical therapy. I only experienced some improvement when prescribed meloxican. I still have trouble getting up from the floor without pushing against something and now I have pain in my upper arms and shoulders, particularly when reaching above my head. I am particularly stiff when I stand after sitting for any length of time. However, all my blood tests have come back basically normal with little indication of inflammation. I had a brain MRI that came back normal. I have ran all my life and, up until this past May, exercised 5 days a week. Perplexed - no real answers.