Food Safety Report: Feta cheese, Hilltop Road, Ngong, Kenya 2 years ago • details 2 Comments Comment Suspected food poisoning. Symptoms: Stomach Pain, Cramps Suspected source: Feta cheese Onset: 12 to 24 hours Duration: 4 to 12 hours Sick: Me Additional information: Pain in my abdomen and passing gas. The pain is rising up to my rib cage.