I've Had A-Fib Since 2012, Numerous (at Least 6) ER

I've had A-Fib since 2012, numerous (at least 6) ER
visits because the medication did not work. Even had the Cardioversion (sp) once. Currently on Sotalol....so far so good there. I had an "implanted loop recorder" surgically placed in October. This now shows, in addition to short runs of A-Fib, I am also having "short bursts of SVT" and "bradycardia"......Dr still taking "wait and see" approach.......should I get a second oppinion?? I simply don't feel good, a lot of fatigue. It's getting in the way of my life!