Im A 25 Yr Old Male Exercises 4 Times A

Im a 25 yr old male exercises 4 times a week I dont consume alcohol no caffeine drug free I been having extra beats my heart feels wierd I can feel the extra beat in my chest to my neck some days its bad and other days I get them less frequent They did an ekg came up abnormal I consulted a cardiologist my second ekg was normal my echo came normal my stress was normal and my holter monitor came with some slow beats with long pauses so they send me to see an electrophysiologist for a second opininon based on the slow heart beats and I explain my symptoms to the doc and he said it could be ectopic heartbeats but they were not life-threatening that it was ok to have them and that the slow heart beats with pauses were normal on a person around my age. I was sent home not convinced and im actually having this ectopic beats very often especially when im laying down and after meals I get them. They freak me out beacuse it feels like my heart stops for a second or two. The wierd thing is they dont happen during exercises but im still stressing out is their something I can do to make them go away?I've try to ignore them and not to thing about it but it just feel not right when it happens and I freakout even more