On a 10 day dose for diverticulitis and only 2 days left. I am still in agony with a pain in my lower back left side, near to where the kidneys are. I don't know if this is a side effect of the Cipro or is it that this tablet isn't clearing my infection. The pain is really bad, other pain I have while on this tablet is under my left ribs, feels like a tennis ball is stuck in me. I am new to this awful diverticulitis issue, only had it once before. I just want to know whats going on with these pains. Is it the Cipro causing these or is it that the Cipro isn't curing my diverticulitis