BBT Thermal Shift
Conception FAQs >> BBT Thermal Shift
14. Question: How much will my bbt temperature increase? What is a normal
bbt "thermal" shift?
As discussed in previous questions and articles, your basal temperature is your
"base" temperature at a "resting" state - measured in the
morning prior to any activity at all. The basal body temperature method
of fertility awareness is based on the principle that your body starts to "heat
up" around 48 hours after you ovulate. This "warming trend" is
caused by the production of the hormone progesterone, which is secreted by the
ovarian follicle after the egg is released into the fallopian tube. The follicle,
at this juncture, undergoes a transformation and becomes the "corpus luteum"
(one the egg is expelled), and during the luteal phase of the menstrual cycle
the corpus luteum produces and emits progesterone.
Therefore, if you are bbt
charting or practicing methods of fertility awareness, then you can expect to
see a temperature increase two day or so following the moment ovulation takes
place. A typical bbt thermal shift will likely be between 0.4 °F and a full
degree (or even a bit more). The minimum basal temperature increase
will be 0.2°F. You may, in fact, measure a slight dip in your basal temp
right before you see the rise. Note that no two bbt charts will be identical.
By tracking warming trends
on your fertility chart, you'll know when you ovulate each month and time intercourse
to better the odds of conceiving a baby. Other advantages of bbt charting? You'll
also be able to confirm that you are ovulating regularly each menstrual cycle
and you'll be able to identify possible cycle irregularities. BBT charting,
under certain circumstances, can alert women to issues relating to fertility
problems, hormonal imbalances, and menstrual health factors. A doctor will be
able to help you interpret your chart.
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