i get a rapid heart beat that i can feel pulsating throughout my body. it is such a hard beating that it feels like it is actually moving me with each beat.  i begin to get dizzy and think that i might faint.  it started with my first pregnancy, which i think put extra strain on my heart- that caused me to become symptomatic.  it happens at completely random times; therefore, I do not believe that it is associated with anxiety or panic.  When I get tachycardic, I know that I should count my pulse- but once it starts, I generally feel like I just need to lay down- Quickly! I find a dark room to decrease all stimulation and lie on my left side for better circulation, still it takes usually 15-25 min for the episode to resolve.  any idea what could be causing this?
Hello! Welcome and thank you for asking on Chat Doctor! I carefully passed through your question and would explain that your symptoms are not related to any cardiac disorder. Anxiety or high blood pressure could be the cause of this symptomatology. Have you measured your blood pressure during these episodes? I would also recommend performing a complete blood count for anemia and thyroid hormone levels for possible thyroid dysfunction which can mimic this symptomatology. If the above tests result normal, and your blood pressure is normal too, you should consider anxiety as the main cause of your symptoms. In such case, I would advise consulting with a specialist of this field, in order to help you manage better your anxiety. Psychotherapy and an antidepressant could be helpful! Hope you will find this answer helpful! Best wishes,