Feeling a bit defeated today. Had an aortic valve replacement 20 months ago and experienced AF before and after. Treated with Amiodarone, Bisoprolol and Warfarin and successfully cardioverted 16 months ago. Came off Amiodarone, switched to Aspirin 9 months ago (yes, I know the arguments but I had too many interactions.). have felt really well. However, got myself in a stew about my cardiac appointment yesterday and after a slightly stressful few weeks have found myself back in AF. Fortunately the heart rate is not persistently high but the bumping is unpleasant. Have agreed to try an alternatively anticoagulant and cardiologist is working out a medication plan with the possibility of further cardioversion further down the road. When I came off Amiodarone, my thyroid went haywire and after it decided which way to go, my thyroid medication was reduced. I had no history of thyroid problems before being on Amiodarone. Had a thyroid blood test at the clinic to see if my levels are high again and causing AF. Anyone else with experience of this? Current problem may be stress related of course. Very fed up after feeling so well for ages.