Ovulation Test Issues/Questions

AMBER

I have PCOS, I have lost weight and all of a sudden picked up ovulation on Clear blue Advance. For the last 5 months I've always hit a peak smiley. However this month I keep getting blinking faces and finally cm fluid last couple days. Day 14 would have been the 20th so I started checking 20-today and just blinking faces.... Has this happened to anyone else?