Can anyone help me work out what is going on with my OPK’s? These are my daily strips from CD 8 to 18 (today). I have a long cycle, about 35 days but can range from 33-38. Apps predict that I ovulate between day 20-22 so it might still be early days but I feel like it got dark on day 15 then went lighter again. I’ve not started getting my EW CM yet like I usually do in the fertile window. I’m on my first cycle TTC so I’m a little confused by the whole thing.