Whole Milk Coffee Illness - Starbucks,

I am wondering if it had to do with the milk, as I was the only person in my party that had whole milk in my coffee. I ended up with severe abdominal cramping, nausea & vomiting, and diarrhea. It was the only thing I ingested that was different from the people I was with for 2 days. | Symptoms: Diarrhea, Nausea, Vomiting, Cramps