I've always have had heart pulpitations in the past, but nothing abnormal. Recently I've been getting alot more, I explained to my Dr. it feels at times that butterflies have been released in my heart and I dont have chest pain but I do have what feels like to me is a toothache and its on the left side of my chest up into my shoulder and down in my left arm. I went for a stress test and it came back showing some old scar tissue,now I'm scheduled for an ultrasound.