UTI turned brownish discharge... gross but I need help

I have an appt with a new GYN on Monday but any advice helps. The last day of my fertile window was 2 days ago. Used the pull out method Monday and Tuesday. Had a UTI on Wednesday so I started flushing out my system with water, cranberry extract, and apple cider vinegar until I can get some antibiotics. Thursday my system was mostly flushed out. But then I started having a brownish discharge. So it wasn’t coming from the urethra but the actual vaginal canal. Today it still seems like the UTI is still looming under the surface on top of wiping and seeing all of this bloody discharge. Any ideas??