Hello, and welcome to the Mayo Clinic community. Some of us are highly symptomatic when it comes to heart arrhythmias and some are not. I am almost consumed by my AF when it happens because I can feel it. Some have no idea. The same for flutter. They are lucky, but only in that respect; they also are late to be detected and when it happens they may be too late to have a meaningful intervention. That is but one reason that annual exams are important. You do not want to be in arrhythmia long because the heart will change itself, called 'remodeling', and not in a good way. You want your arrythmia controlled or stopped...ideally.

You are on apixaban, the drug marketed as 'Eliquis'. The reason you are on it is because the single great immediate risk with AF is stroke. The reason is that the poorly circulating blood in the left atrium might go stale, especially in the 'left atrial appendage', a small grotto on the extremity of the atrium. Later on, left uncontrolled, AF will cause enlargement of the left atrium, fibrosis, possibly mitral valve prolapse, and this makes treating it very tough indeed. So you want it controlled, and you want a direct oral anti-coagulant, which is what you are taking. Good. The control is via an anti-arrhythmic drug, if one can be used effectively for your circumstances, or via metoprolol or diltiazem, as examples, of beta blockers or calcium channel blockers. In severe instances, an potassium channel blocker called amiodarone is used, but that is literally a drug of last resort. ( I actually googled that very question and got a 'yup' out of my search.)

Your best approach is to be referred soon to an electrophysiologist, cardiac electrical experts, who are trained to treat such problems. Hopefully you have a couple of really good ones within a few hours drive who can help you with that.