I have been on a 24 heart monitor, as I was experiencing fiblirations, but the test showed that there is nothing wron, But I am still feeling the fluttering in my chest cavity,, and this is very often a least     a few times a day, I am concerned, what could it be.
Thanks for your question on Chat Doctor. I can understand your concern. No need to worry about major heart diseases because your 24 hours ECG recording (Holder monitoring) is normal. Sometimes stress and anxiety can cause similar symptoms. So better to consult psychiatrist and get done counseling sessions. Try to identify stressor in your life and start working on its solution. You may need anxiolytic Chat Doctor.  So avoid stress and tension, be relaxed and calm. Don't worry, you will be alright. Hope I have solved your query. Wish you good health. Thanks.