1. because you has dinner last night resulting in vomiting and diarrhea, it could be more of Gastro enteritis
) than cholera.
2. If the place where you took the dinner was unhygienic, it could be possible Amoebiasis
3. go for a Microscopic Examination of stool , which will help in diagnosing your condition better.
4. because there was multiple episodes, make sure he is under regular supervision of doctor, to prevent dehydration
due to vomiting and diarrhea.