OPK question??

Amber • 10 years of ttc #1, mc👼🏼on 12/3/18 ttc our 🌈👶🏼

I know that this is a positive opk, but I have never had the test line be darker than the control line in all my testing. Does anyone know what this means? Thanks! (So excited to BD and hopefully this is our month! 🌈👶🏼)