Advice time! OPK

Chelsea • 34 years old, married for 8 years to the best man, have 2 and 5 year old little boys, and have our third, a girl, arriving September 1st! 🎀👶🏼👦🏼👩🏻👨🏻💙
I ended my period Thursday morning. I was having weird pains in my lower abdomin yesterday so I decided I would take an OPK this morning just to see where I was. The test line is not quite as dark as the control line, but I'm wondering if, by the test here, if it looks like my fertile window is coming soon? What do y'all think? Thanks ☺️