OPK is it positive test

Anna W.

I'm 38 I have been trying on and off since 2015. TTC my #3 I've been testing since day after my ad, they have definitely gotten darker, 1st test 7th 2nd and 3rd test today. glow showing the 9th as Ovulation day. why do they look so light for the 1st line ?? what do u ladies think