So my daughter had an episode last year where she almost fainted, it was really hot on the stage, she hadn't eaten or had a drink and was fine after doing both. I took her to the dr immediately. The dr took her watch and checked her heartbeat to her watch and it was fine. I demanded blood work which was fine. My issue is that tonight she said her right arm hurt. I immediately think heart. Now when I listened to her heart while she was asleep it seemed like every once in a while the beat was either faster or slower. Like it was hard to keep a perfect beat. I am terrified. What should I do?