My daughter is 26yo, has always been athletic, a healthy eater, non-smoker etc... she has been having chest pain, sob, dizzy spells, erratic and elevated heart rate. She has been to PCP, neurology, rheumatology, and cardiology for all sorts of tests. Most recently, an echo stress test. The technician actually stopped the stress test due to elevated heart rate. bp started at 122/90 which is high... normally 105/65 and pulse was 128 and normally 65-70. She was not overly anxious. At 9 minutes, she started a light jog. Heart rate rapidly rose to 194 and the tech stopped her. She was dizzy, light headed and got a headache that lasted several hours. Cardiologist said stress test looked normal. What should she do next?