You may begin charting at any time in your cycle so long as you are sure to record the temperature on the correct cycle day area of the chart you are using. Cycle Day One is always the first day of your period. Each morning upon waking, prior to any activity, take your temperature a...
BBT and ovulation share an inseparable bond: the temperature starts to decrease right before ovulation and increases right after it, commencing the luteal phase. This process usually happens around the 14th day of the cycle. The basal temperature of a woman's body is lower during the follicular...