Tuckerville:

I can't believe it... you perfectly described what I get... I've never been able to put it into words, and I've not heard anyone else talk about the pressure / cough thing. That is exactly what happens to me, and I feel the palpatation. I had ekg's, a holter monitor (3 day ekg continuous reading) and of course, they never found it then. But I will say, when I am tired, have had too much caffeine, or am stressed (especially when all of the above align), I have a lot more of them. It's my body's way of telling me... WHOA THERE! They feel scarey, though, even though I try to tell myself they are nothing. I'd have the ekg / cardiac exam done no matter what -- just to be sure there is nothing else underlying it. Apparently they are quite common and harmless in most cases. Good luck and I hope you are feeling better than a couple days ago.
Jes