Suggest Remedy For Pain In Hand

After sleeping all night I woke up with a pain in my right arm near where the arm attaches to the shoulder. I thought maybe i had slept wrong on that arm. However it is still hurting today. I carry a lap top computer and case on that arm. I just wondered it I pulled a muscle and did not notice it until I slept all night. I have been carrying that computer for a long time so I am surprised that it would affect it now. What should I do about the pain other that taking pain medication?