Hello, I m a 34 yr old female, and my left lower back hurts, it feels like my bladder is swollen, and it hurts sometimes to pee. I went to the e.r. a week ago and they said it was a uti. I did a follow up with my doctor and she said that I should be over the uti. She did another urine sample to see if I still had a uti, but she hasn t called so I m assuming that means I have no uti. I don t know what to do, I have no nausea, fever, or chills. What could be wrong?