According to Glow I’m supposed to be ovulating tomorrow but took a ovulation test 2 days ago and it was little darker then the day before

but not quite yet, so took one today since I’m supposed to be ovulating and the line actually was lighter and getting more faint. I’ve been testing all week and it was getting darker at first then all of sudden faint.... did I not ovulate at all. & honestly I never that I can remember have had egg white CM. Usually it’s just watery and clear if anything. Which is how I am now. But I don’t ever recall it to have egg white like ppl say I should have if ovulating. I had a miscarriage in Nov. so I’m ttc. Any ideas why this is happening??