I am 21 weeks pregnant. Just a week before i finished 7 days antibiotic course of zocef 250 mg twice for 7 days for urine infection which showed 18-20 pus cells with e coli bacteria. Redid my urine routine and culture test done yesterday, routine report showed 25-30 pus cells this time and culture report is awaited. This is my fourth urine infection in these 5 months of pregnancy. My gynae is also concerned.. this is my second pregnancy as first one i lost to incompetent cervix at 24 weeks .. this time cerclage also done in 4 th month. 19 th week anomaly scan showed 3.8 cm cervix length with internal os closed..