11. Chills or Sweats.
This is perhaps one of the most difficult challenges to figuring out if you have food poisoning. Many illnesses, especially the flu, cause the body to increase its body temperature to kill off the infection in your body. One of the symptoms you may feel from this is intermittent periods of feeling hot and cold, maybe even shivering. If you notice that you are feeling clammy or sweaty and you have not exerted yourself then this should be a red flag. Second, if you become cold all of a sudden, this could be a sign of a fever. Make sure to monitor your symptoms and measure your temperature as often as possible. Report your body temperature at your next visit and be sure to hydrate effectively.
One of the most common signs that you have food poisoning is if you recently drank water from a contaminated source (not bottled, filtered water). Especially if you have any of the listed signs above, drinking water from a contaminated source is a highly telltale way to determine that you have some sort of infection in your body. While it is important to stay hydrated or to rehydrate, it is very important to drink water from trusted, filtered sources and not from the tap. If you currently have any of the symptoms, consider having your doctor assess your health and you may even considered a sports drink as well.