Is this my + OPK??

Lisa • 💙Mommy of 2 boys💙 & a daughter 💗 Pregnant 🤰🏻 with #4

So I know they say not to read opk test after few hours but when I took my opk this morning at 10 the test line was lighter than my control line and then I just looked at it and it's dark!!! The previous ones before that never got darker so is this it or almost there?