Hi, I have been having the following symptoms, - missed beats/ flutter when walking fast, particularly when trying to talk at same time (difficulty breathing ) - upper abdomen feels bloated when walking and trying to take deep breath, causing skipped beats - same when going from upright position to lying down - same when turning at night to change sleep position - am slightly overweight , but sypmtoms seems to have got worse after losing weight - not comfortable sleeping on back as feel belly pressing and can sense if flutter will start Any thoughts?