Thank you SO SO much for the replies. And to you, Mike, for staying up late to answer my questions!

I was kinda hoping it wasn't RSD related (and it still may not be, we have more test results to come yet) and that it was just a one-off- that way it doesn't become a daily/regular thing and ANOTHER part of me my RSD has taken over! But that would be too easy, right? And an RSD life is never easy!

What you've all written and the article links make sense.

It's now Thursday morning here, and it all started on Monday morning. My heart beat feels a bit more normal at the moment but my chest is very tight. This problem is definitely not going away in a hurry. I'm going to ring my pain specialist today and try and get an appt with him, to talk about what we can do, if it is my RSD causing this. I think I will also make an appt with a cardiologist (yep, we can do that for free here), but I'll wait for the other blood test results to come back first.

Thanks heaps guys. If anyone else would like to add anything, I'd appreciate it!

x Kate