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Despite the long description, there are no specific pointers to the possible heart problem...
You have not stated your age, gender, personal habits, family history or co-morbidities
You are probably having missed beats and Anxiety
/ THE FIRST STEP IS TO SEE A CARDIOLOGIST / Irregular heart beats 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.
/ TMT (Treadmill exercise ECG) / LABORATORY work-up – may all be necessary for further assessment and assistance. You may even need Electro Physiological Studies (EPS) /
The treating doctor may suggest them depending on need, based on his assessment of the situation.
Wishing speedy recovery