Hello, Last few days I have been dealig with some kind of flutterig in chest as if my heart does a hard beat or flutters. It is like it pushes my wind pipe. I also feel "popping" in my throat from time to time. I had some ecgs and an xray, as well as blood tests. They are all fine, but I never had anything like this while they were done. I had a few good days and it happened all of a sudden last night. And again and again, usually at night. Has anyone else had the same thing?