Taking Letrozole- ovulation help

So this is my second round of Letrozole and I’ve been trying to track my ovulation but it’s all over the place. Take a look at my trend. What do y’all think? Did I actually peak CD11 or Is my body just trying to ovulate more than once. Should I keep testing? My gyn wants me to get my progesterone levels checked 7 days after my positive opk and I don’t know what’s positive! Lol I used to have positive opks but now they are not easy to read since the control line doesn’t get very dark. Help me!!