Beware of E. coli Infections! Contaminated food and water can lead to severe stomach cramps, diarrhea, fever, and more. Learn how to protect yourself from this bacterial threat and stay Why Does My Stomach Hurt After Drinking Water? Angel Water The flu and stomach flu are not the same thing. Each has different symptoms and causes. Knowing the difference helps you get the right care when you're sick. Check out the graphic Diarrhea: Causes, Symptoms & Treatment