Fast heart beat? Normal, or not?

sounds to me like you had a panic attack, talk to your doctors about it.

Stress can cause your heart to race. It may have been because you were in a large group of people. I am sure you are ok but tell your parents and maybe you should get checked out by a doctor. :)

THE ABOVE PEOPLE ARE WRONGG! THEY ARE NOT DOCTORS, A HEART BEAT OF 190 WOULD NEVER BE CAUSED BY STRESS OR AN INFECTIOUS DISEASE. PLEASE DO NOT LISTEN TO THEM, THE ONLY POSSIBILITY OF HAVING A HEART BEAT THAT IS RAPID WITH THE CONDITIONS THEY STATED ABOVE ARE SINUS TACHYCARDIA WHICH DOES NOT GO OVER 120 BPM. Supraventricular Tachycardia - Some people have episodes of SVT that includes extreme rapid heart beat, shortness of breath, palpatations, etc. Don't be afraid, there not very dangerous. Go see a doctor, he'll give you medication such as adenosine or dilitizem. This condition accounts for all your symptoms, if you were at the time, compeltely healthy with no sickness and you don't have panic disorder then this basically MUST be your diagnosis.

if you have strep throat you MUST take antibiotics. it could account for the episode of tachycardia (fast heartbeat). it could also be caused by thyroiditis, which will make yr throat sore as well - MUST see a doctor because if it starts up again, tachycardia can literally kill you. your tachycardia may be related to a panic attack, idiosyncracies of your growing body, low blood sugar triggering anxiety, overdoing physical exercise without warming up, etc. so you see, it can have numerous causes - get the throat checked, and mention the episode.