Hi, need to know if anyone knows what this can be a little worried it's afib, Woke up to my heart beating hard and a little fast one beat right after the other , like beat beat beat beat , it scared me , I cough and it went right back to normal beats, it only lasted seconds, I have never been told I have afib, have always been told it's nothing but harmless PAC, can this just be a long PAC taking place, if I didn't cough would it keep going like that, this has happen before like every 3 months or so seems like I have a really long PAC , what do ya think, thank ya