Ovulation Question

Shar
Yesterday, my tests got a lot lighter. The picture above is from the two days prior to my drop yesterday. Based off the pictures above, were any of them positive? Did I miss ovulation or not ovulate at all? I wasn't sure but considering they gradually got darker then lighter yesterday, I assumed I ovulated...like on the 26th since it was the darkest. My concern is that it was the darkest but not as dark as the control line. Any feedback please! :)