Utis & yeast infections often & doctor prescribed me antibiotics just in case i get one. paranoid about infections, how do i know when to take meds?

Urinary track infection: when you have symptoms as pain while voiding, burning, turbid urine, bad odor, possible fevers, chills you should see your doctor and perform a urine exam and culture to identify the cause. Taking antibiotics without a known cause will cause resistance to antibiotics and failure of treatment in future. Never use a drug without an indication