Free Burger, Severe Illness - Logan's roadhouse,

Went and at Logan's on Tuesday for the free burger thing they were having. Burger tasted fine, but later that night I began pooping water, puking, chills, shivering, feeling like I'm dying!
Been having real bad stomach pains, and still have diarrhea 3 days later. | Symptoms: Diarrhea, Nausea, Vomiting, Chills, Stomach Pain