I've been having pain in my left arm and tightness in my chest - almost constent. The Dr said it's from Fibromyalgia. I still wonder if I should go to the Mayo Clinic and have my heart checked as well as my arteries and veins. My Mom died from Congestive Heart and Cornorary Artery Disease and my Dad had Mini strokes. I've had my heart checked three times in the past and nothing showed up. I don't want to look like a hyprocondriac but I keep wondering about the pain in my arm and tightness in my chest. Sometimes I break out in a cold sweat too. Usually around the same time of day.