After the catheter is taken out, urination should return to normal in a few weeks. You'll usually take antibiotics for a few days to get rid of any infection in the bladder from the injury or the catheter. In some patients, the bladder may be "overactive" for many weeks or months from the irritation of the injury. With overactive bladder, you would feel the need to urinate often ("frequency") or suddenly ("urgency"). For this, you may be given drugs to help calm the bladder.