Hi Dear,
Welcome to HCM.
Understanding your concern. As per your query you have pain in the shoulders. Well there can be many reasons for symptoms you mention in query like 
nerve root compression due to 
disc protrusion , infection , muscle strain ,  Rotator cuff pain , tendinitis , brusitis and swelling in joint . Sometimes there is trigger point activation of 
trapezius muscle which can cause in shoulder pain. I would suggest you to apply warm compresses , do light stretching exercises under expert , start 
physical therapy and take ibuprofen or acetaminophen for pain . Consult orthopedic surgeon for proper examination . Doctor may order CT scan , MRI or nerve conduction test . Doctor may prescribe 
methylcobalamin supplements , multi vitamin supplement anti inflammatory or recommend acupuncture. Doctor may also recommend light stretching exercises . Steroid injection, If rest, medications, and physical therapy do not relieve your pain, an injection of a local anesthetic and a cortisone preparation may be helpful.
Hope your concern has been resolved.
Get Well Soon.
Best Wishes,
Dr. Harry Maheshwari