Well, I can't decide for you if you should go ASAP, but I would if it were me. My heart rate is also high (about like yours) and they discovered last year that I have a Mitral Valve Prolapse w/regurge. This can be discovered through a simple (and painless!) test called an echocardiogram, which is an ultrasound of the heart. Do you have any other symptoms? My others include; dizziness at times, palpitations, and a feeling of being out of breath. MVP is not life threatening, but should be diagnosed and treated depending on how mild or severe it is. I take beta blockers which slow the heart rate (i am now usually at a 55 on average). Simply put, they block the stress hormone from affecting the heart. Also, MVP is found most commonly in women, young and old. I am 29 and thin and otherwise fairly healthy.....so the docs were surprised to find anything...they wanted to treat me for anxiety. SO, if you are worried, go to the doc. It can't hurt! Request some tests though or they might just tell you that you are anxious, or too young, or blah blah blah! lol....let me know if i can help in any other way! Good luck! Lil'Pea