Iced Macchiato Illness - Starbucks,

I ordered an iced caramel macchiato and about 3/4 into the drink I opened the lid to see chunks of white in the drink. About 2 hours after my last sip I had a headache and became very nauseous. Before I could vomit I popped two activated charcoal pills to hopefully prevent vomiting (it worked.) About an hour after the charcoal pills I had severe diarrhea with awful stomach cramps. I began to feel better after a few episodes but very exhausted. | Symptoms: Diarrhea, Nausea, Cramps, Headache