Two days ago I started developing symptoms of urine infection, as i am familiar with it and had it in the last year 5 times, i could spot the signs. by the evening it got worse and i started taking D mannose. I never took it before to treat ogoing infection, just to prevent. Next day, after taking about 5 spoons of d mannose, i started having severe pain and feeling of bloatness in my stomach, during the night the pain reached my back under the ribs, what makes me wonder if it is my kidneys.