Positive OPK???

Jessica • Married 2015. 👼 7.14.17 / 🌈 👶🏻 💙 2/27/19! “We prayed. God answered!”

Really conflicted here. Usually my peak OPKs are really dark - like I know it’s my peak. I had negative tests all day yesterday, then had 2 OPKs that looked like this picture today at 7:30am and 2pm. Took one when I got home from work at 6pm and it was clearly negative again. This pic is the darkest they ever got. Did I have my surge? It’s CD 20 btw...I always ovulate late :-( just not sure if I should consider this my peak or not...also my temps rose this morning from 97.24 to 97.68. Maybe I peaked over night and got the tail end of it today. Ideas?