Frequent Food Poisoning Mystery - Domino's Pizza, Hagerstown Maryland

Hagerstown, Maryland, United States

Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting
Suspected source: most likely either Domino's stuffed crust parmesean pizza, or bad tap water (Washington county, Maryland)
Onset: 12 to 24 hours
Duration: 12 to 24 hours
Sick: Me
Additional information: This is either my third or fourth food poisoning this year, I've lost count, but my first time reporting. I know the symptoms by now, but this time I'm not certain on what has caused it | Symptoms: Diarrhea, Nausea, Vomiting