Suggest Remedy For Left Sided Lower Back Pain, Fever And Frequent Urination

I have been experiencing lower left side and back pain for three days. I urinate often and sometimes large amounts. I have a fever of 99.4 most of the time.. I feel the urge to urinate often but it does not hurt or burn when I go. Mostly I feel pressure. My whole lower back hurt a lot last night and pain relievers did little for it. My urine is not cloudy or red. I am diabetic and have many other health issues that cause me to be on many medications. Your suggestions would be greatly appreciated.