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One important thing to know is your age and gender. Causes for infection the urine varies with both of these. If you just had one episode of that infection then you should not worry much. Just maintain good hygiene. Drink plenty of fluids. Avoid constipating diets like refined flour, junk food etc. Allow yourself more fibres like fruits and green leafy vegetables. However if the pus and infection are persisting then i suggest a few tests. Get another urine examination to confirm repeated infection. Get a urine culture also to see what orgainism is growing and antibiotics can be directed accordingly. Also get an ultrasound
pelvis including kidney
and bladder (KUB). Further investigations or treatment will vary according to the results of above mentioned tests.
Hope that helps
God bless You
Dr Anand Sinha