Thank you for your query.
I hope there is no reason to worry.
These are symptoms of UTI no doubt and you should wait for 48hrs for the antibiotics to work.If the fever
does not show any improvement then there may be two reasons for it,either the drug is not working or she has associated pyelonephritis
which will need iv medications.In the meantime give her a lot of fluids along with some alkasol solution.Do consult your doctor if the problem persists.Hope this answers your query.Have a nice day.