In most cases when the food poisoning is mild the food poisoning will usually go away in a few days without needing to go to a doctor.
Avoid eating any solid foods or any products that contain dairy. Avoid dehydration as well and make sure you drink plenty of fluids.
If you think you have severe food poisoning you might need to go see a doctor.
I've had mild food poisoning before and called my doctor and he told me that if I just stay hydrated and avoid any solid foods or dairy products and wait a few days then the food poisoning should go away and it did.