Ovulation test question?

According to Glow today is my most fertile day (33%). But I took a ovulation test for the first time today and got this ​I cant figure out what it means? I am lightly spotting and releasing mucus(is that what its called?) and have been fo a few days now. Will it show this if you missed your ovulation? Or is it light and just keep taking it to see if it ever gets darker? I have "normal" cycles. Glow generally gets it right for the day i start my period. Im just worried i missed my fertile days by going by glow. :/ help?