My opk last month was darker than control line. It's only my 2bd cycle ttc since a loss though- my youngest childs 2 so it's a while since I've used opks really!
I'm on cd 28 or 22. Know that sounds odd but I'm pretty sure some if my AF bleeding was in fact post lisa bleecing- it's been a really strange cycle- my opks have gone from dark, to light, to really dark, to no line at all.
The difference today is that the line went dark straight away, which is how I remember getting positives in the past. I've also got ewcm but again ive had it in and iff for a couple if weeks now.
Fibgers crossed it's finally heading in the right direction!
Thanks for looking 😃