If you mean like "palpitations", yes. I'm only 15, and when I was 12 or 13 I thought I was going to die because it would happen to me every hour, everyday. Try not to think about it, that's what I did, I just stopped worrying because I obviously wasn't "dying" and now they only happen like once a month. Don't worry about it, I know quite a few people who are like this and they've been to the doctor and they've all told them the same thing, that's it's nothing. It's normal. Have a nice day.