Hi,Please give me more details about your child illness
1.Duration of fever and frequency of fever
2.Any associated complaints with fever like cough, cold , loose motion
and burning sensation in urine.
3.Any history of constipation
4.Details of investigations.
Your child is 3 year , I think her weight is 12-15 kg,dose of monocef
O which you are giving is low you have to give at least 60 mg twice a day.
You can give paracetamol
and meftal p for immediate relief of fever.
Syrup Colicaid can be given for abdominal pain
Wishing good health for your child