In sexually active females urinary infection is common. Sexual intercourse predisposes to infection in some females. Get your urine cultured and treat it with appropriate antibiotics. Confirm the complete response to antibiotic by doing urine examination.
You might be prone for recurrent infection. Always drink adequate water. Atleast 2-3 ltr daily. Empty your bladder before and after intercourse. Observe if your episodes of infection is preceded by intercourse. If that is the case then you might need a single dose antibiotic after intercourse. consult a urologist