Depending on how you feel it could be that the bacteria has colonized. That means it has become part of you and the body isn't fighting it anymore. This is fine but there is a higher chance of it turning into another UTI in the future. Jim got to the point where he was resistant to all oral antibiotics. We discussed with the doctor what to do and we decided to stop all meds and see what happened. Turned out he was colonized and he's fine now. But again, if any symptom pops up we have to run in and get a culture. He is also on a maintenance antibiotic, Macrobid.
Hope this round of antibiotic helps you!