I Had Food Poisoning Last Thursday Went To The Dr

I had food poisoning last Thursday went to the dr who gave me a drug like max olio ..they said it wot
Led faster..it did really well I felt much better 15 minutes late.I still have an uncomfortable feeling I get my tummy and I have list some of my energy.
I don't really feel like eating much .i am drinking plenty of water.
My question is ..how long does food poisoning last
Thank you