FF chart puts OV at CD21 but I got a -ve OPK on that day and the previous 5 days.
I got a lovely strong +ve OPK 24 hours later on CD22.
EWCM on CD20, 21 and 22.
When did OV happen? I think it was overnight of CD22 but that's when I want it to have happened so I'm biased!
I think I read on peeonastick.com that if the chart and OPK disagree then you should believe the OPK. What do you reckon?