I have been experiencing indigestion/reflux for the last week. This should be potentially worrying to heart patients due to the symptoms: pain in the chest, particularly when breathing in, which mimic the symptoms of heart attack. However, I recognise the feeling from a bout I had several years ago, related I think to a gall bladder infection. The feeling was similar to this and not as bad as the opiate induced reflux from last year. A quick check on the Kardia confirmed a normal heart rate albeit with a few ectopics.
I decided this was nothing to worry about and perhaps needing to rethink my diet (too much fast food recently) if it is not gone by the end of the weekend, then I may call the arrhythmia nurse.