Thank you for your query on Healthcare Magic.
You need a complete physical examination by a physician followed by investigations to know the cause for frequent sickness.
The type of investigations depends on your symptoms.
Clinicalnexamination is important in the diagnosis of sickness.Typhoid fever
may present with relapses.
This should be confirmed by doing widal test
I advise you to comsult the physician for examination and further investigations.
Hope I have answered your query.