I am 28 years old, and started noticing what I beleive are PVCs. I first experienced one during a panic attack where my heart rate went up to 130bpm, while I was trying to calm myself down. It really freaked me out, went to the ER and they gave me no information. Now I notice them right after I exert myself (running up the stairs, hiking) and I'll feel my heart pound bum, bum, bum, .....pause BUM, bum, bum. And then my heart rate will go back down. At rest, I don't feel like my heart skips a beat ever... it's just when I come to rest after exertion. Thoughts?