20 weeks - too late to change docs?

Last week I went to do my anatomy scan. When my results were posted online it was posted that I have a suboptimal cervix and a suboptimal left ovary. I also had my doctor test me for a uti - which came up positive. I called my doctor two days later shocked I had not heard from her yet. She then tells me she will need to do a biopsy after I deliver because it is positive for precancerous cells via the ultrasound. Is this doctor serious? Why didn't she call me? I am outraged and scared. I don't even know what to do at this point. All I can think is what the hell!