Hi, I got my first positive opk on cd17 early in the morning, on cd18 it was still positive but beginning to fade slightly, initially I had a really big rise in temp straight after the first positive opk on cd18 however the day after this my bbt dipped down to coverline, before climbing again FF initially said I ovulated on cd17 but changed it today to say I ovulated cd19, which one looks more likely from my charts below? Could it still be cd17 with a fallback rise pattern?

Baby dust to everyone!!! Xx