Question about ovulation..

I decided to try opks this cycle. AF was 12-21-17 to 12-26-17. We BD on the 27th. I took my first opk on 12-28-17, clearly negative. I had unusual spotting (bright pink) on 28th and 29th, on and off. I had forgotten to take another opk on the 30th, but I tested yesterday and it looked pretty positive (pic below). We BD last night. I took another opk this morning and it's back to negative (second pic). My question is did I miss my peak day?

opk from 12-31-17

opk from this morning, also what opk from 12-28-17 looked like.