###Human: I am pregnant and have UTI. Please help. ###Assistant: Hello. You may repeat the urinary routine microscopy test again and if the symptoms are still present, likely that you are resistant to Cephalexin and hence can be started on Nitrofurantoin 100 mg which is category B pregnancy drug and safe in pregnancy. It can be prophylactically taken daily once till delivery and then two weeks post-partum to avoid any chances of recurrent UTI during pregnancy and negating canes of preterm labor. You may discuss with your obstetrician and discuss the option.