Hello and welcome to HCM.
Thanks for putting your query over here.
You have cough,loss of appetite,fever,diarrhea as well as migraine.
You have not mentioned if you are on migraine medication or any other medication,anti inflammatory drugs used in migraine can cause gastritis with
gastrointestinal bleeding causing black stools.
If I were your treating doctor,I recommend,
-certain investigations like blood haemogram,widal test for typhoid,malarial parasite test,
stool test.
-Tablet Calpol thrice for 5 days for fever.
-Further treatment by antibiotics depend upon the result of the investigations and physical examination.
-Have plenty of fluids.Oral rehydration salt for diarrhea and fever.
- Tab
multivitamin ,small and frequent meals for loss of appetite.
-Adequate rest.
-If no medication for migraine has yet been started,tablet
rizatriptan or
sumatriptan twice a day needs to be given,initially for 3 months.(prescription drug)
Hope this information helps.
Thanks and regards.