I’ve had what I describe as a “vibration” in my heart area, more to the left side. I’ve seen multiple cardiologists and no one can find a reason. It will get bad for a few days to a couple of weeks and then it will get better for a little while and then come back. I’ve also seen my GP and Gyn and asked both of them about this but I get looked at as if I’m crazy. Any ideas what would cause a vibration feeling like this? I will also get elevated heart rate but that isn’t constant.