OPK help


First one from last night

Last two, one from this morning and one tonight?

My <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> says I’m ovulating in 3 days..

What do these tests tell you as it’s my first time testing due to having a miscarriage 2 weeks ago and not having a period since..