Hi, yesterday I was in gym class (I m 15) and we were doing our normal workouts, and my heart was beating really hard, not unusually fast, but it beat so hard that it started to hurt really bad, and so I had to stop working for a bit, but even then my heart didn t stop hurting the rest of the time at gym, and throughout the rest of the day, it would randomly start beating really hard, just a few beats, and hurt really bad, and it s already happened twice again today. Is there anything wrong? Should I ask my doctor?