Your food poisoning symptoms can vary depending on the kind of bacteria you consumed. But for most mild cases of food poisoning, you may experience common symptoms such as an upset stomach, stomach cramps, nausea, vomiting, diarrhea, and fever. These can take hours or days to occur, and the CDC recommends that you drink plenty of fluids to prevent dehydration from your sickness.
If you have signs of severe food poisoning, however, you should see a doctor immediately. According to the CDC, these symptoms includes bloody diarrhea or diarrhea that lasts more than three days, a high fever of over 102 degrees Fahrenheit, frequent vomiting that prevents you from keeping liquids down, little or no urination, a very dry mouth and throat, and a feeling of dizziness when standing up. Food poisoning can cause serious and long-term health consequences, such as as chronic arthritis, brain and nerve damage, and kidney failure, per the CDC.