This is my hubby and i's first month seriously ttc. I've been using an opk all week (clear blue digital advanced) and the past 4 days I have had flashing smileys indicating "high" fertility. Glow says I should ovulate today, and we happened to be at the store so I grabbed some cheaper tests to try. I did one this morning that was clearly negative and then this one late afternoon. The lines look pretty similar to me, but I'm not sure what others thought?

Also, I should mention that in the instructions is said that if it's a positive the line will always stay dark or only get darker, but if it's neg it could produce a second color due to drying up or something like that. The other test for a purpleish line, but this one has only gotten the slightest bit darker?