What Causes Recurring Pain In My Collar Bone Down To Arm?

I have been having intermittent right side collar bone pain, that radiates all the way down my arm for a number of years now (at least 3 years). It almost feels like there is a turnicate around my arm stopping bloodflow. It usually occurs about once every month, to month and a 1/2. My fingers, wrist and elbow get very stiff, and I have a lot of weakness in that arm. I have not had any injuries, and do not participate in any sport activities. I also get the feeling in my right foot about as often (every month, to month and a half). The symptoms usually last for a minimum of 3 days, up to a week and a half at a time. Between these times of pain, I have no symptoms of antything. I have been trying to research on-line and some sites indicate that it could me Multiple Sclerosis (which runs in my family, My sister, 1 brother, and 2 aunts have MS). Any suggestions? Oh, neither ice or heat or pain releivers releive any of the pain.