text: Im working in the cardiologist line, i can answer your questions.\nYou have to see a cardiologist for a check up, most probably they will do tests like ECG (record ur hearbeat rhythm), Treadmill Stress Test (to see if you have the irregular heart beat during exercise too), Echocardiography/ultrasound of the heart ( to see if you have abnormal valves) and 24 hours Holter (just a smalll device attached on ur body 24 hrs to record ur heartbeatfor a day).\n\nArrhytmias (irregular heart beat) can be caused by several factors, but you are a young boy; so most likely it will be caused by Premature Atrial Complexes or Premature Ventricular Complexes;which is also known as skipped heart beat\nIt has to do with the nerves in your heart muscle.\n\nIt could be inherited, trigger by stress, coffee and tea. Most of the time, its not a life threatening condition, but go and see a cardiologist is my advice. i can go on explaining more about your condition in details but it this answer will ended up so long.\nI hope it help