13 days of HIGH fertility on OPK?

~Jennifer • 36 yo, finally mom to beautiful baby boy after 2 MCs, unrevealing infertility workup and multiple cycles of Femara followed by Clomid. Baby girl on the way, April 2021.
This is my first month using Clear Blue Advanced opk digital test strips. My first test was negative but now I have had 13 days in a row of flashing smilies meaning high but not peak fertility. That cannot be right can it? According to my chart/CP/CM/symptoms , I am guessing ovulation happened about two days ago...I was really hoping to confirm my chat this month with a positive opk. Thoughts? Anyone else had this?