I agree with Donna! Looks like there's a strong possibility that yesterday was O for you! And it sounds like you covered your bases well for BDing. Did you add extra temps to see if you get crosshairs?
I think that your chart looks fine! Mine is wacky, too, even temping at the same time every day, after x hours of rest, no illness, etc. For whatever reason, it's less wacky after I O.
(I did the same thing--looked at the first link and thought, WOW! her chart looks just like mine!!!

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