Thank you for your kind advice. I have tried the Kardia, but my arrhythmias weren't coming often enough for it to work. Hard to keep your fingers on it at all times! The Holter monitor works well, but I only had it for one day and I wasn't bad on that day (of course!). And I'm a chicken when it comes to sticking my finger. But it may come to that. It's just that knowing won't really help. I already know from years of experience that I need to eat regularly or bad things happen. But my symptoms are getting worse. That is the thing that worries me. But then, I'm pretty old, and have had a good life all in all. You do really suffer with these things, though, and I feel so bad for all the young people on here.