Daniel is a 32 year old accountant who presents with a 2 day history of fevers, increased urinary frequency, dysuria and perineal pain. A recent STI screen was negative. He is allergic to quinolone antibiotics.
On examination his observations are stable except for a temperature of 37.7°C. Urine dipstick is positive for nitrites and leucocytes. Abdominal examination is normal but rectal examination reveals a tender, swollen prostate gland.
Based on the likely diagnosis, what is the most appropriate initial management plan?