At the end of March of this year I was hopitalized and diagonosed with a severe blood stream infection. I had no idea, but had symptoms of confusion, unstability and shivering. I went directly to the ER and they discover the infection but could not identify how I could of gotten it. After 2 days I was told I was diabetic and put on 500 mg. Metformin. I went to a new Dr. in July and the urine test showed positive for microscopic blood. I have had a CT scan and HUB xray just recently as prescribed by a Urologist. My question is: Can this microscopic bleeding be cause be taking Metformin ?