I had an omelette made with eggs, spinach, cheese and mushrooms.
Almost immediately afterwards my stomach was swollen and I was in pain, then I spent the next few hours vomiting until I fell asleep.
I don't have an allergy to any of those ingredients and the eggs did not smell off. I read up on food poisoning and I think it takes a few hours or even a day for that to kick in.
Any ideas on what happened?