worried mama

baby girl went to her 15 month appt today and the dr was concerned her heart sounded a little abnormal. she said she wanted to do an ekg just for precaution. i probably looked like i was about to cry, and she said not to worry if it was anything serious we would know about it already…. like i’m not going to worry 🙄 we find out results tomorrow, has anybody had this happen to them?