Heart palpitations can be caused by anxiety, stress, fear and many other things.
Reducing stress and anxiety can help lessen your heart palpitations. Try breathing exercises or deep relaxation (a step-by-step process of tensing and then relaxing every muscle group in your body) at the time of your heartbeat sensations. Also, consider practicing yoga on a regular basis to reduce the frequency of your palpitations. Once a serious cause has been ruled out by your doctor, try NOT to pay attention to heart palpitations, unless you notice a sudden increase or a change in them.
Eliminating common contraction triggers — such as caffeine or tobacco — can decrease the frequency and severity of your symptoms.
Beta blockers — which are often used to treat high blood pressure and heart disease — can suppress premature contractions. Other medications, such as calcium channel blockers, or anti-arrhythmic drugs, such as amiodarone, also may be used if you have ventricular tachycardia or very frequent premature ventricular contractions that impair your heart's function, causing severe symptoms. You did post that your Cardiologist did not find any sx of heart disease.
We have a 43 year old member who posted, " I'm talking days of them, 10,000 - 30,000 a day (holter monitor showed this). You will find this thread at the following link:
Post by member, MzPam.
I hope this gives you some reassurance.