I have had consistent left flank pain. I am currently on cipro 500mg two times a day for kidney infection. I am on second week of four week dose. This has been a persistent infection which is now gone according to my last culture, but the pain is not gone. It is just below my ribs in my back on the left side and at times comes around to the side and front. It seems worse after I eat or drink and mornings and evenings. Help