OPK Confusion

Kate • 33. Canadian. TTC #1 since Aug. 2014. PCOS. MC in June 2016. Uterine septum and ovarian cyst removed January 2017. Started Metformin January 2018.
Glow has suggested my LH surge is today, 8.10.14. Clearly that's not the case. I'm worried I've missed when I ovulated. In your opinion, is the line getting fainter or darker? I think it's getting fainter, and I've perhaps already ovulated much earlier. 
​Thanks!