I have started charting. Not to get pregnant, but just to work out my cycle after many years on the pill. Was excited that my second cycle was 29 days (first was 40ish), and now temping my 3rd cycle post pill.

How do you use temperature to predict ovulation? I have been reading the FF-Charting your way to conception lessons, and had a look at some of the charts in the Stickies at top of Charting your Cycle but just don't get it.

does the temp dip day before ovulation, day of O or after? And then what does it do (if you not pregnant?

thanks