Okay, so in the past year, I've noticed that my heart sometimes will skip a few beats. It happens most often when I yawn, exercise, or get mad...but sometimes it happens completely unprovoked. Most of these episodes only last a beat or two, but one time last year, I had an episode that lasted about an hour. I immediately consulted my doctor, who ordered an EKG. The EKG appeared normal, however, so my doctor said it was no big deal. But I'm still concerned. I'm an otherwise pretty healthy 16 year old girl...so it's strange to me that this would be happening. Any ideas of what it could be/what I should do? Thanks