I have this feeling (often) that my heart is flopping around in my chest like a fish on a hook. It is extremely frightening. When this happens, I sit very still and try to wait until it regulates a little. It's been going on about a year or so but seems to be happening much more frequently, lately. Sometimes I think, ok, yeah, this is the end. But so far, not. I haven't said anything to my doctor as yet, I don't really know what to tell him that doesn't sound so lame. It doesn't do it every single day, but mostly. Sometimes much worse than others. I don't feel that it's anxiety related, I don't see myself as given to anxious episodes, but who knows. Anyway, it's very, very scary.