In first week, march my mother is diagnosed with typhoid after taking proper medication , next test there were no typhoid symptoms, but from march till this may she is getting low grade fever from 98.5 to 100.3 in evening, we have checked for all test like lft, kft, ultrasound , chest x-ray , stool test , urine test all came out right there are no symptoms of any thing, she is diabetic and esl count came to 40 which was high . what to do next ?