Nitrate in urine

Kate
I've just been for my 31 week midwife check. She had a student in with her today, the student checked my urine sample and said I had trace of nitrate in my urine. The midwife kind of just shrugged it off. I have since googled it and found it means I could have a UTI. Has anyone else had this? I'm mad at myself for not questioning it now!