Hey Bel,
Just checked out your chart & the previous one.... Are you still using OPK's? I am still such a pre-schooler with ff, but I think it looks like you O around CD 13/14/15??? last cycle. Have you POAS? Maybe you O early & are pg???
Seriously ff does my head in..... gyno said to stop using it, stop analysing CM etc... and bd every second day from approx. CD10 til about CD 20ish... not sure about that but hey - I'll try anything at the moment
GL hun, I hope this cycle is different for a happy reason