while uncomfortable sometimes that is not in a danger zone from my understanding. try to focus elsewhere for awhile and make sure you are breathing from your belly
If all your tests have been negative for causing this, then it's time to look at anxiety as the cause. We can get anxiety symptoms even when we don't feel anxious. You're young, by getting help now you can nip this in the bud and be done with it. Therapy can help you to do this. We hear from a lot of teens suffering with anxiety, so know you're not alone. You can learn how not to obcess about your heart which is fueling your anxiety, and keeping it going. Talk to your mom about getting into therapy regarding this. Take care.
It sounds like anxiety. You dont have to have a full attack to have symptoms of anxiety like a racing heart. The fact it came down is great news. Its hard not to obsess trust me I know. Last night before bed I was feeling extra tired and almost doopy like. I took my blood pressure and it was 87/44 the first time and 89 or 90 over 46 the second time. Pulse was in the low 50's. I started to think about heart block and other things and said to my husband before we went to bed, Dont let me die in my sleep. But I didnt allow myself to get worked up about it. Feel asleep and it was alittle more normal today. My heart would race at the oddest times when I first started having anxiety. If you just take quick notice of it and then brush it off and go about what you were doing it will help your mind from taking on the flight or fight response.