hi just recently my heart started to beat very fast and hard for probably about 5 min. while it was happening i felt lightheaded. it stopped but now  my heart has been skipping a beat every 6 to 10 beats i would guess. this has happened many times in the past but it doesnt happen often at all.
Hello! Thank you for asking on Chat Doctor! I understand your concern and would like to explain that your symptoms may be related to a cardiac arrhythmia or anxiety. I recommend going to the ER for a careful physical examination and a resting ECG. An ambulatory ECG monitoring and some blood lab tests (complete blood count, thyroid hormone levels, fasting glucose, blood electrolytes, kidney and liver function tests) are necessary to establish the diagnosis. Hope to have been helpful! Best regards,