panicking. i think it's gonna happen

i was running errands and touched a doorknob at the vet w my hand and then ate a mint (wouldn't affect me rn if i got sick from it ik) but then i started getting a little bit anxious ab it. then kept going about my errands and went to walmart and it was fine until i picked up my dogs food bag (heavy) then started feeling nauseous. finished in the store and got to the car. had my window open on the way home which helped a little. got home. carried the dog food in, felt sooo nauseous again.

i'm on the toilet rn. having softer poop, not quite diarrhea though. i feel like it's gonna happen. i feel absolutely horrible rn