Basal Temperature
Here’s a list of the real reasons why women should chart their waking temperatures (basal body or BBT) to help them achieve pregnancy. Notice it does not include informing women about their most fertile time of the month.
Charting your Basal Temperature (BBT) will help you to know whether:
- you were in fact pregnant before you had what you thought was a ‘late’ period (therefore you are fertile!)
- in any particular cycle you are still fertile as noted by low temperatures
- you have a thyroid problem (overactive or underactive), that needs to be addressed to make conception easier
- your luteal phase is long enough for the egg to be implanted (10 days minimum is required)
- during your luteal phase your progesterone levels are high enough
- you are pregnant! as seen by more than 18 high temperatures
- you are ovulating
- you may be in danger of miscarrying as recorded by a sudden drop in temperatures after an apparent conception
As you can see there is nothing above about helping you decide whether this is your most fertile time to get pregnant. Moreover using the basal body method for fertility timing can actually impede efforts at conception, because by the time a change in temperature is recorded it’s usually too late as the egg has died and gone.
That said however, BBT recording does definitely play its role in helping you to conceive as seen in the above mentioned bullet points.











