My Heart Fells Like It Is Flip Flopping And Beating

My heart fells like it is flip flopping and beating real hard. I am on propafenone 150mg for A Fib and 2.5 AmlodipineBesylate for blood pressure, I am not in A fib I don't think.. I have to run to the bathroom every 45 to 60 minutes to urinate, which happens whenever I go into a fib.. Not sure what is happening I was told by Dr I could take a 1/2 pill of metrophol 25 mg when ever I have some discomfort.