Dear Doctors, I'm 16 years old and over a month ago, I had an episode where my heart started racing out of nowhere, I got light headed, dizzy, and I thought I was having a heart attack. However, I went to my pediatrician, and he listened to my heart beat took my pulse, and my blood pressure. He said that everything was okay, and I was just having a panic attack. However, I was still not convinced and was still constantly anxious and scared so I went to the ER. There they also took my pulse and blood pressure, but also an EKG and a chest X-ray. The Doctor said that I was fine, and I wasn't going to have a heart attack. He then listened to my heart and told me that it was just stress and anxiety. Can you help me out please and relieve me of my worry?