question: Hi my child 4 n a half years, vomiting and diarrhoea, treated her with domperidone n after half an hour gave metronidazole, vomiting stopped but diarrhoea continues, and she also cries of stomach pain and stomach cramps, it has 4 hours since I gave her metronidazole. Should I wait, or another doze of metronidazole be given?