Really worried I have listeria

Charlotte

I am going out of my mind with worry I have listeria. Last night I ate pork that had been left in the oven 4 hours after being thoroughly fryed then cooked (it was pork mince).

Half an hour later I started feeling sick and had stomach ache. I have had stomach ache and nausea all day, no vomiting or diarrhoea.

This is my first pregnancy, I'm 8 weeks, I am so anxious all the time.

Thank you x