Predicting periods

Kristi

I knew my period was coming (well I was hoping anyway...I was on cycle day 74). But, my temps started falling. Today was the 3rd or 4th day of decreasing temps and the first temp below the control line. Bam! Period! I was so shocked! I had had none of my usual "hints". Thank goodness I was wearing a light day pad just in case.

Have y'all been able to predict your periods were coming based on your chart?