Slow-Rise Temperature Shift Rule - the Sympto-thermal Method of Fertility Awareness

This individual experienced a slow-rise temperature shift. Their thermal shift occurred on cycle day 16, since it was at least 0.1 ºF (or 0.05 ºC) higher than the previous six days. On cycle day 20, after four consecutive days of a basal body temperature that is above the coverline, the Temperature Shift Rule is satisfied.

Learn the rules of the sympto-thermal method of fertility awareness.