have you worked out or used your arm more than ususal lately? I get a feeling of "heaviness" in my side but I have no pain. Is it hot where you are, this may come into play big time as you well know....
Megan, do not be afraid because fear is a mighty tool used by the enemy to keep you down. I have had MS for 20 years and am still walking and talking and laughing. I would say get on one of the ABC...