Looking at your chart, I would agree with cd14...did anything different on the day of the dip? (Wake up earlier, slept with window open) you could maybe omit that dipped temp and see what FF says then?
All your other signs make me feel like cd14 was the one!
Thanks for looking! There wasn't anything different about sleeping that night - I may not have eaten dinner because of a late lunch, so that could have been enough to run a little cooler in temp. I wear an Ava bracelet and don't have to worry about wake up times, thank goodness.
This morning, FF ended up giving me solid crosshairs this morning on CD14! Oh happy day! DH will be out of town for 5 days, so I'll be entertaining myself with POAS obsessively now that I know how many DPO I am. WOOHOO!