According to your daughter sign and symptom and history she is suffering from fever with nausea, headache and bitter taste .
On the basis of her current sign and symptom and history she is suffering from some infection due to Viral and bacterial and in spp plme case systemic infection .
You should give complete history about your daughter like age and weight .
You can do some test like CBC and ESR and Widal test and Typhidot IgG and IgM and
MP and
LFT to find out the correct reason of that.
Next Steps
When you will get the result then
Please take consultation for your daughter and
Health Tips
Please keep positive attitude to fight any problem of your life.
Don't worry your daughter will be well.