BBT or Basal Body Temperature refers to your body’s resting/waking temperature. BBT is often used to chart fertility patters. It can be used to confirm the passage of ovulation, but cannot predict when ovulation will occur. It does this because the hormone progesterone, released in quantity after ovulation, causes the body’s internal temperature to rise slightly.
Some women may notice a second rise in temperature around the time of implantation. This typically would occur around 6 days after ovulation. This is referred to as a triphasic pattern. In some rare cases, a woman may notice that her temp stays higher after ovulation, but will slightly dip around 6 days after ovulation; this also can be an indication that implantation has occurred.
It is important to remember a few things about BBT. First, temps need to be taken at the same time each morning. Second, no warning of approaching ovulation, only confirmation when it has passed. A minimum of 3 hours sleep is needed for an accurate temp. Getting out of bed, any activity, drinking something, even a nightmare can alter your resting temps making them inaccurate or misleading. Taking your temps for a minimum of a week is recommended, and longer may be better. There are certain advantages to charting the remainder of your cycle.
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