Girls, anyone have any experience with a PCR test for screening during…

Girls, anyone have any experience with a PCR test for screening during a cold or flu-like illness? How did it go and what were the results? I'm having my screening tomorrow, but I got sick. The cough won't go away, my throat hurts. I'm taking medication. I'm worried about the results of the tests. My gynecologist is on vacation, so she wrote to the midwife, who replied that everything will be fine, you can go to a geneticist and tell them you had a fever.