Excessive Dressing, Severe Nausea - Pollo tropical,

I ordered a Cesar salad. It had an excessive amount of dressing. I ate half since it tasted a little off. Later I had terrible nausea and a headache. This lasted two days. I still have nausea and diarrhea three days later. I will never eat here again. | Symptoms: Diarrhea, Vomiting, Headache, Nausea