Some patients describe afib as feeling like skipped heartbeats, followed by a thud and a speeding up or racing of the heart. Others describe it as an erratic heartbeat, strong heart palpitations, or simply a rapid heart rate. For still others, it feels like fluttering, butterflies, or even a flopping fish in the chest.
I would check in with your Dr. if you feel this vibration again just to be on the safe side.
Kindly,
Kitt