Continuous fever from past 4 weeks.

2 weeks after completion of 16th cycle of chemo(Responded very well), she was affected with cold, cough and fever. Cold and fever got controlled in a week. A week later she started suffering from fever. Cough and headache controlled after taking medication. But fever(100 to 102) is not getting controlled from past 4 weeks, it is just reducing for 3 to 4  hours after taking dolo. She is admitted in hospital under general physician, has been giving antibiotics through IV continuously from past 4 days but no improvement. Still getting worse because of frequent IV needle blockages. Conducted CBC, LFT, Urine microscopy, X-ray chest, perepheral smear tests, no abnormalities found except urine infection. I am attaching test report and medication sheet. Blood culture and urine c/s test reports are yet to receive. We are worried because the reason for fever is not getting identified and neither it is reducing. Please help us if any more tests to be done or any medication change required. thanks