I'm wondering if there are others out there who struggle with severe heart palpitations in addition to their CFS. I'm having a hard time treating both my extreme fatigue and calming down my heart. I'm currently on some heavy duty beta blockers and will be seeing next week a cardiologist who specializes in electrophysiology. My palpitations are unusual in that my heart rate is not irregular nor fast. It just pounds so hard, it hurts immensely. I have extreme heaviness in my chest and it feels like a knife through my back. My nuclear stress test was picture perfect. Any advice/help would be much appreciated.