Mary~ Well that temp does no good if it ain't on the chart!

As for CM- I think that is a very individual thing. Mine goes from nothing to EW in about 6 days I think. So, it is best right before O and the day of O. But that's me.....you'll have to play with your own CM to figure that one out! LOL. Yes, you want BD right before O, but you can start about 6 days b4 O. We try to BD at least every other night (sometimes every night) starting at CD10 and I O about CD15.