Thanks all for the support
sought advice from cardiologist, further tests - it appears that I fluctuate between brachycardia and tachycardia, pacemaker has resolved heart block and low heart rate, now also looking at either beta blockers or ablation to manage tachycardia.
You know you're wired when...
You have a little piece of high-tech in your chest.
I had a pacemaker when I was 11. I never once thought I wasn't a 'normal kid' nor was I ever treated differently because of it. I could do everything all my friends were doing; I just happened to have a battery attached to my heart to help it work.