Hello and thank you for using HCM.
I carefully read your question and I understand your concern.
I will try to give you my opinion about the related issue.
Probably, this fluttering sensation in your chest is related with heart rhythm.
It might be a simple
tachycardia, meaning that your heart beats more then 100 beats for minute. Or, it might be an extra-sistolik beat. This is an electrical impulse that generates before the usual
sinus rhythm.
Both of this rhythm problems might have different causes. Caffeine overdose and energy drinks might be the cause and they allays exacerbate this symptoms.
Rhythm problems may be related to
anemia,
hyperthyroidism or simply
stress. In some cases they might be hereditary.
So, if i was your treating doctor, i will advise you to stop caffeine products, excessive alcohol and energy drinks and do a simple blood analyze for what i mention before.
After that a simple electrocardiogram, a cardiac echo and a holter rhythm monitoring to see your rhythm tendency.
Hope I was helpful,
Best regards, Dr Ervina