Taking macrobid for uti dr. called said they cultured it don't have one should i continue macrobid?

Don't have one what?: If your doctor called to tell you that your urine culture did not grow out any bacteria, s/he should have informed you of next step eg whether to finish or stop antibiotic. Best to check w/your doc. The risk w/stopping now is antibiotic resistance. But of course, you balance that against risk for c diff colitis or other antibiotic induced diarrhea or just a simple yeast infection. So ask ur doc.