Hello! First, some background. I have panic attacks severe enough
Thanks for using Healthcaremagic.
I read your query and understand your concerns.
Considering the fact that you are high stress person, young female of 24 years, no medical condition till date, diagnosis of indigestion in emergency room for the same problem, Appearance of pain irrespective of any physical activity or exertion the possibility of pain arising from anxiety need to be ruled out.
In other words I do not think there is something other than stress which is responsible for your stabbing pain in center of chest.
I hope this helps you.
Feel free to write back to me if you have more questions.
Thanks and regards.