Ovulation or bust

So.. I have been using clear blue advanced and clear blue (regular) to check for my peak and when I should be ovulating.. from top to

Bottom have been my daily (sometimes twice a day) results (the second to last one is from this morning and the last one is the one from this afternoon).. my questions is: should I be reading into the darkness of my lines on these specific tests? Or just the digital symbol? Also.. no surge detected and so far I have just been getting the flashy smiley faces..