What's wrong with my heart?

I'm a 14 year old girl, and I'm at a normal weight and everything and recently my heartrate has been between 130 and 160 bpm. For like a week now.I had some pop a few days ago and my chest/heart hurt so bad I thought was gonna p out and my hands were shaking and this is the second time that happened. I snowboard every week and I go to the gym with my mom. My heartrate used to be 60-70 bpm. What's wrong?