Hello Isabella,
Thank you for posting your query on healthcare magic.
Let me please assert that your daughter does not need the antibiotic as there is no sign of infection in the
stool test and also since you did not mention any fever.
Moreover the dose is too high.
From the symptoms you mentioned and also the fact that your daughter is nearing puberty this could be psychogenic.
I advise you to make sure she's not under too much stress or pressure at school or at home.Girls around this age tend to be frequently struck by anxiety related to various things like peer pressure and feelings of insecurity particularly at school and these manifest themselves in physical symptoms, frequently
headaches and stomach aches.
If needed you may take her to
psychotherapy sessions and also help her open up to you.
Meanwhile, you can give her probiotics which will help with the stomach issues of
bloating and nausea.
For now, she does not need any medication.
However if symptoms worsen or if she debelops fever and
diarrhoea you may neef prescription antibiotics.Until then, please follow the advise I have given.
Hope this helps.
Thank you for visiting healthcare magic.