No high fertility days on clearblue advanced?

Hi everyone, I would really appreciate your input and experiences. This is my first month of using the clearblue advanced OPKs, the one where you get flashing smiley faces when you’re at high fertility, and solid smiley faces at peak fertility. I’ve been testing since CD9 and I have been getting the solid circle (low fertility). Today is CD 13, and I just got the solid smiley (peak fertility). Does this mean that my estrogen doesn’t rise properly? Did this happen to anyone else? I’m just wondering if this may be why I’m struggling to get pregnant. Thank you for any input!