Hi friend, Welcome to Health Care Magic You have not stated your age, gender, personal habits, family history or co-morbidities THE FIRST STEP IS TO SEE A CARDIOLOGIST / need to be DOCUMENTED by ElectroCardioGram (EKG). Standard ECG records the electrical activity of the heart, for a few seconds. It can detect the arrhythmia occurring during that time only. If the episode occurs randomly or precipitated by a specific activity like exercise, one needs Holter or event monitor. Dehydration / Electrolyte disturbance / Anaemia / Anxiety / Alcohol / Tobacco (smoking) / Caffeine (too much coffee, cola) / Medicines like Phenylephrine used for ‘cold’; Salbutamol used for asthma / Fever / Thyroid / Vitamin D, calcium and magnesium may all have a role... Also ECHOcardiogram / TMT (Treadmill exercise ECG) / LABORATORY work-up – may all be necessary for further assessment and assistance. The treating doctor may suggest them depending on need, based on his assessment of the situation. Take care Wishing speedy recovery God bless Good luck