LOL - ok guys, play nice, this is stressing me out and yes, you guessed it - giving me an irregular heartbeat!
Seriously, thanks for the posts and advice. I think I have a bit of both, I am affected by stress, my personal and work life is generally a bit of a mess - not a happy time, but I do think there is also a bit of a chemical imbalance somewhere. Probably my own doing from years of smoking and binge drinking, I'm not getting any younger.
A bit of an odd coincidence perhaps, this only started after I had a hip resurfaced about 7 years ago, I had something like an epidural and there was obviously massive physical trauma. There was talk of the metal particles, which are bound to enter the bloodstream in small quantities, being potentially carcinogenic but I just wonder if they may affect anything else - particularly electrical impulses...?
Cheers and good health.
RobH