Food Safety Report: Oui Yoplait Yogurt, Lacey, WA, USA 2 years ago • details 35 Comments Comment Suspected food poisoning. Symptoms: Nausea, Vomiting, Stomach Pain, Cramps, Headache Suspected source: Oui Yoplait Yogurt Onset: 1 to 2 days Duration: 4 to 12 hours Sick: Me