At your age it's most likely due to be anxiety. But still if you have persistent symptoms would recommend you to get an ecg done just to rule out anything worth urgent attention. And if it's normal then for anxiety would recommend counselling and if it doesn't work then some medication s
Next Steps
get a 12 lead ecg done
Health Tips
avoid exertion, do meditation to help calm nerves.discuss with family members and counselor as it wil help ease you