Question: when do you know if you have food poisoning?
Answer: While the main symptoms are nausea, diarrhea, vomiting, and stomach cramps, you also may have a fever, headache, muscle and joint aches, or blood in your stool. You may also be dehydrated, so your mouth and throat feel dry and you don't pee as often as you typically do. Dehydration can make you dizzy when you stand up.