So confused 😑

I thought I ovulated because my cervix went from very high to very low this morning. And now it’s high again. What could this mean??? I’m not positive of my ovulation day as I didn’t get a positive (It got dark on the 15th and I think I missed the peak as it only got lighter after that as well as a lot of EWCM around those same dates) but was hopeful that I already did based on my cervix height. Any advice is appreciated :) I also have PCOS but not sure if that would affect it or not.