Help me pls someone

Clare
I am bit confused when ever I'm
Going into my "fertile week" I always get cm and used the OPK digital on the week of Anzac Day which was the Monday the 25th I got the flashing smiley and BD that morning then I received the non flashing smileys for the next two days I didn't BD! Now rosy I see this can someone tell me why please? I did test says no but I could be early still?? Also on my other app ovia is says Sunday as testing day what can this be pls? (Sorry for the photo I know its gross!) but we all girls we go through it ha 🙏