cells value will be increased in case of infections and epithelial cells
are unwanted cell which are shed from the urethra
Your pus cells and epithelial cells are quite normal which doesnot show any indication of infection.
Long stay in hospital may can cause this kind of symptoms. This is called as hospital acquired infection.
Burning sensation while urination is mostly due to urinary tract infection
commonly called as UTI.
Even though your Urine analysis value are normal you should start antibiotics your physician has prescribed.
It is nothing serious, almost everyone would have got one or two episodes of UTI.
So dont worry.
Hope I clarified your concern.