I am a 39 year old female and have been experiencing strange symptoms over the past 5 years. I go through cycles that for months at a time where I get heart palpitations, nausea, indigestion, sweating, shaking, vertigo, dizziness. Sometimes while I m eating, after eating etc. I ve been to the ER twice with a fast heart rate. Everyone seems to want to say its anxiety and I need to understand what is causing this. I need help.