What do you guys think?

Ti
Okay, the top opk I took around 3:30pm and the bottom around 730pm. When I first took the top it seemed a little darker than it does now taking the picture. Was this my surge? According to glow I'm due to ovulate on cd16 this Thursday. Should I test again tomorrow to see if it is darker? FYI these are all the same two ovulation tests in all 3 photos.