Trimethoprim/sulphamethoxaxole is a good drug for uncomplicated UTI.As per report it is sensitive so it can be used..oral Fosfomycin also has good penetration for cystitis.
But just with reports and no clinical history ,co morbidities and vitals its difficult to decide if your antibiotic will work..
Next Steps
If you have fever or signs of infection then u should go with usg kub .