Well in case anyone worries about racing heart, I went to the doctor Friday and BOOM, I had a major panic attack. My heart rate shot up to 142 and I really thought I was going to die. I got dizzy, sick to my stomach.... I could even see my heartbeat pounding through my shirt. The doctors were calm, but the nurse's eyes lit up a bit when she saw my heart beat. Then she checked my blood pressure and it was 122/72 and reassured me I wasn't going to have a heart attack. So if anyone freaks over a racing heartbeat, I know it feels like you are going to have a heart attack, but just try to calm down. Do your breathing exercises!