Thank you for your query on Healthcare Magic,
Whenever she gets the fever
you can give paracetamol
in a prescribed dose and consult the doctor for the need for the antibiotic and its adequate dosing
The stomach infections are most commonly due to contamination with a virus or a bacteria and usually spread through contaminate water or food via oral route.
So try to avoid outside food, frequently wash the child hands and her toys, keep the floors clean, as these measures will lessen the frequency of the infections.
Hope my answer will be helpful to you.