What are the symptoms one might have if A-fib was treated with cardio version and worked after 2 cardioversions. Now on Multaq but have serious head pressure off and on and daily head pressure, causing feeling of dizzyness and lightheadedness--and some nausea. Comes and goes but is daily. Also have inner ear condition and surgery was done for that a few months ago. So it's hard to tell which is the problem. Just wondered what symptoms I might have if A-fib is 'back'. Also am having daily trips to the bathroom since being on Multaq.