That's a bit uncanny!
I get VERY similar symptoms. I've been suffering from missed heartbeats now for a couple of years and never been able to pinpoint anything that causes it (probably because I get worried when it happens and it's difficult to adopt a scientific approach when you're worried) but I've always thought that there was gurgling at the top of my stomach or what felt like in my chest!?!?
Thinking this was completely insane I dismissed it because I couldn't associate gurgling, or in other words wind/gas with heart interupptions.
I'm still a little unsure but as time goes by I'm noticing more and more that I DO get a bubbling feeling (ie air/gas going through a pipe) just before or at the same time as I get a missed heartbeat!!!
I'm positive that if I went to the doctors and mentioned this he'd think I was mad!!
I realise this is an old thread but are you still around and about and did you get any further with your doctor???