Hi there ~
It seems like you are having panic attacks. If you have had a cardiological exam or an electrocardiogram and there is nothing wrong with your heart, it clearly is a case of anxiety
disorder. I understand that these attacks are bothersome and are getting worse. I suggest that you practice relaxation strategies, deep breathing, yoga
, pranayama, meditation
, and regularly exercise physically. I think it may be appropriate to see a psychiatrist
to get started on medication to prevent further attacks. I hope this helps.