Did I miss my chance ? OPK *update

Hello ladies I am on my first round of clomid and I am doing opk to try and time the perfect time. I started my clomid medication on 11/23-11/27 so my days cd 5-9 and my doctor had told me to start doing the opk test on the CD 10-20. I was doing it every night at 8pm and all were coming out negative so CD 15&16 I decided not to test I didn’t want to see more negatives . Today I had minor craps on my right lower side and when I got home from work I tested just to check and i got two lines the first one was just as dark as the second line but I’m not sure if that means I already ovulated or if it means I’m going to ovulate ? Any of you ladies that have experience have any idea I need to know ? Please leave tips and advice below would greatly appreciate it ! Thank you all . Picture below are my test and the below one Is the one I’m asking about anyone have a clue?

*UpDate !

Took another test this morning and the lines were darker ! How long does it last ? Do I stop testing now ?