Hi.
Thanks for your query.
Noted the history about you 19 year old daughter and understood the concerns.
Headache with stomach pain and fever can be due to intestinal infection, the headache can be due to the
septicemia because of intestinal infection.
Hence I would advise you the following.
Consult a Doctor for clinical evaluation, examination and investigations:
Tests of blood including liver functions, widal for typhoid,
blood culture and sensitivity.
Tests of stool and urine.
Ultrasonography of abdomen.
Antibiotics and painkillers as per the clinical evaluation supported by tests should help her.
Bed rest, plenty of oral fluids to maintain hydration.
Soft diet.
Probiotics in capsule form, yogurt, bananas help to restore the intestinal flora; activated
charcoal tablets.