Food Safety Reports: Which Wich Superior Sandwiches, Knickerbocker Road, San Angelo, TX, USA

I ordered a large Reuben and ate only half of it.. I started to get a headache and then severe nausea and diarrhea. It is about 18 hours later and the nausea and diarrhea has dissepated. I still have an outrageous headache  | Symptoms: Nausea, Diarrhea, Vomiting, Headache