You dont mention your age or the reason you saw the md . Do you notice the increase in your heart rate
? It could be a number of things and no you wont die . It may be a slightly higher heart rate than normal . This can be caused by allergy
meds such as sudafed
. It could be due to anxiety
. But your md would still send you to the heart md to check out your heart they havr to rule every thing out . it could be an alternative electrical pathway in your heart , this conducts the heart beat . If you have an extra one that is telling the heart to beat too fast , this could cause tachycardia
. My daughter had this at birth . She out grew it but there is treatment if you dont including medication and other inor procedures . Dont worry if you were going to die your Md would have sent you right to icu .