Hi,
I had heartburn this morning - middle of my chest - thought I was dying. Hmm.
I never used to get indigestion or heartburn, now I panic over it all the time as it is a 'new' symptom.
You said 14 hours - was that constant? Or on & off as heartburn is?
Anxiety has a very physical effect on our bodies - and we are so much more in tune to what is going on with our bodies that it seems 10 times worse than normal.
See a doctor if it does not go away for sure, but just reassure yourself that you are going to be absolutely fine & it will pass.
Panic attacks can last for what seems like days (weeks even!) but they always pass.
Take care,
Toni