I occasionally have a weird heart stutter. It doesn't hurt, but it is uncomfortable. When it happens, I cough for a few seconds afterwards. It's like either an extra beat or a skipped beat (can't really tell, but I think it's a skipped beat). I'm a bit confused, and a bit worried it might be serious - it's been happening for the past year or so.
I am 16, about 5 ft tall, 10-11 stone (I know, I'm a bit overweight). I have no history of heart conditions.