Need some advice..... OPK

Rissa💖 • Military Wife, 12yr old princess! 👑 and a 2yr old & 8 week old boy🌈💙
Hey ladies, so sorry if my posts are getting annoying but I'm getting frustrated. This is the darkest lines I've had this month for ovulation and they STILL arent positive. Last month I ovulated on CD 14 and I'm on CD 19 and they still aren't positive. I'm wondering if the test line ACTUALLY becomes as dark as the control line? I only ask because I know each brand is a little different and I'm wondering if anyone thinks it might be positive by tomorrow. Me and my DH work literally opposite schedules so we have to time it perfectly. Thank ladies, I'm just looking for advice and any words of encouragement at this point. I got a positive last month but it's been a little rough this month for some reason. Thank you!