last Friday I was seen in ER for chest pain that had been ongoing for two days .  Left side into left chest.  Did EKG, chest x-ray and blood test.  Doctor didn't think heart issue but said I should get stress test as she could rule out for sure. Pain continued through weekend and today I saw my family doctor and he also does not think it is my heart.  Tonight started having pain in left arm, primarily my tricep.  49 year old male with type 1 diabetes.
90% probability of painful periarthritis of shoulder.  Consult an orthopaedician.  You will be require physical therapy once diagnosis is confirmed.