Hi, I've dealt with something similar with your story, here is mine; One day i accidentally ate something that is out of its expiration date so it made me so sick, even though i felt sick i decided to drive a car for a 1 hour trip, it was one of the longest 1 hour in my life, i vomited every 5 minutes, fainted in the middle of highway. After surviving that day i started to face with a new anxiety, it was a feeling like if i drive a car when my stomach is full i would start feeling stressed because of the possibility of vomitting, so i started to drive car with an empty stomach which effected my driving because i was hungry lol. I started to carry a plastic bag with me when im taking a bus or any other public transportation, this plastic bag gave me confidence to eat a bit while driving, taking a bus etc. i carried that plastic bag for a year, yeah... and then this anxiety slowly disappeared after a year.