<human>: I have lower back pain especially on the left side. I thought it was related to physical effort but it has increased every day. I got some labs for a UTI but they came back negative, the doctor said it could be because I am taking cranberry pills. Could this be the symptom for something serious?
<bot>: Dear patient cranberry pills has no relation to back pain. If UTI is ruled out possible cause will be back pain of muscular origin or instability.  I would like to advise X-ray of lumbosacral spine anteroposterior and lateral views. Please get it done from the radiology center nearby you. Meanwhile, start tab ibuprofen 400 mg twice a day for pain relief. Local application of hot water bag will help in pain relief. If X-ray is abnormal you need to consult orthopedic surgeon nearby your area.