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 From Gas to Ulcers: What Your Stomach Pain Might Be Telling You Stay informed about E. coli symptoms! Know the signs: If you suspect E. coli, keep an eye out for these symptoms: Watery diarrhea (which can sometimes be bloody) 3 Ways to Get Over a Stomach Ache wikiHow