question: I am a 47 year old female. Been dealing with a recent uti. Took bactrum for 7 days, symptoms still persisted. On 2nd round of bactrum on 5th day. My uti symptoms are pretty much resolved but I have had back pain for 5 days, started with lower back. Now the pain is on my left middle back area, pain scale about 4/10, ibuprofen does not help.