Hello! I've just been diagnosed with paroxysmal AF one week ago after having unusual symptoms (palpitations /fatigue/dizziness) on and off for a few years. Last weekend I was in AF for 27 hours but regained regular rhythm with beta blockers. Am now off work (fatigue) and awaiting follow -up appointments (have had ecg, echo, bloods, x-ray, am awaiting a 24 hr ecg). Bloods are all clear, echo showed no structural issues. So I feel conflicted. Glad that I have a diagnosis. Terrified that I have a heart condition that I'd never heard of. I've always been very active (I ran 4 marathons in 5 weeks across April and ran 43 miles of an ultramarathon at the end of May) and am terrified I'll have to give all this up. My echo suggested no muscle thickening (which would presumably be expected if it was running that caused this). So it just seems to have appeared from nowhere (I was getting palpitations before I ever did my first marathon!). Has anyone else out there been diagnosed at my age? I understand that I'm pretty young for all this to happen so would love for someone in the same boat to get in touch. I'm very anxious and worried... And don't want to express this anywhere else as my family and friends seem just as scared as me and I find myself reassuring them...!!