Yesterday I was feeling like I was ovulating even though I knew it was early (CD9 just had a chemical) so I took a ovulation test. It was the blinking smiley. Today, I purchased another pack of ovulation tests and took another one, but this time it was blank. I took it out, and it looks darker than yesterday's. Why would the digital say negative? It looks like it's still high, but not peak, to me! Any thoughts?