Food Safety Report: McDonald's, Myersville-Middletown Rd, Myersville, MD, USA 2 years ago • details 1 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps Suspected source: Food here Onset: 4 to 12 hours Duration: 12 to 24 hours Sick: Me Additional information: Happened after eating big mac