Suffer from Paroxy smal AF's..since Thyrotoxic Storm in 2001. After a recent CAT scan Angiogram,have changed from Sotolol to Flecainide & Bisoprolol. Am in early stages of the changeover. Usually have AT episodes lasting for 2-3 days & spontaneously convert to Sinus Rhythm. Since starting F&B,have been in AF for 6days. I am worried. Had anyone else experienced this? Thank you. Sue