My 1st UTI infection 1 month ago (pain when urinating, burning sensation, fever, frequent urinating). After 1 month I got UTI infection again but this time there is blood in urine. GP Dr Prescripe me with antibiotic CYCIN. I'm worry that this antibiotic reduce the chance of getting pregnant. My last LMP on 1 May 2010. Frequent UTI can cause infertility?