Negative UTI but blood in urine

I went to get a pap smear today but before I got my pap done I told Dr I feel like I have a uti and I constantly feel like I have one. She tested me but she said my urine test came back good not uti present but there is blood present in my urine.

She will send this to get culture and won't get results in couple days.

Have this ever happened before what was the outcome? I feel like I constantly need to pee.