Autigers - I just had a look at your chart, tbh I think that if you didn't have the +ve opk result there, that FF would move your crosshairs to CD19 as theres a much clearer thermal shift there and the temp rise is sustained. It's a pain because it'd mean you're not as close to the end of the 2ww, but it's better that that thinking you're late when you're not and getting your hopes up.