I am so sorry that this has happened to you.
Here is my list of sx for panic attack
These sensations often mimic symptoms of a heart attack or other life-threatening medical conditions. Remember if it is a panic attack it is self limiting but very scary and uncomfortable.
IMHO you had a panic attack, however please remember I am not a professional and can not take the place of your physician.
Do you have a fear of flying? Just a thought.
Hugs to you.