I am female, 17 years old, 116 lbs, and about 5'6. I have been taking Vyvanse for a few weeks and since in increased the dose level last week, I have been experiencing rapid heart rate, tightness in chest, and shortness of breath. I am very athletic and regularly eat healthy meals. My first question is how serious this is. As in, is this normal and could I die? I have a lacrosse game tomorrow (first game playing since recovering from concussion) and I was wondering if playing an intense game could kill me? I am worried because in the news recently, many teen athletes have been spontaneously dying in the past week.