Lumpy Milkshake, Severe Symptoms - McDonald's, England

NG1 3QN England, United Kingdom

Milkshake from there Ate nothing the night before, decided I wanted a maccies breakfast had one with a milkshake. Milkshake was lumpy but I thought that was normal. Fell asleep for 3 hours, woke up needing the toilet and to throw up. Sat on the toilet and did both. This continued for the rest of the night. Now I'm awake 8 am the next day with the same issue!!
Yesterday | Symptoms: Diarrhea, Nausea, Vomiting