Also, your chart could be triphasitic. You may have to wait a couple more days to get the crosshairs back. It could also be confused with your other methods of OV checking, such as CP and CM... If you are able, I would say, keep BDg! GL FXD!!
"What Is a Triphasic BBT Chart?
Every BBT chart that indicates ovulation shows a biphasic pattern. Biphasic, when it comes to BBT charting, just means that there is a clear, sustained upward temperature shift at the time of ovulation, making a clear distinction between the temperatures that came before ovulation, and the temperatures that came after ovulation. For more information on the basics of BBT charting, read this step-by-step piece on how to chart your body basal temperature and how to detect ovulation with a BBT chart.
With a triphasic BBT chart pattern, there is a third, sustained upward shift in temperature, usually occurring around 9 days post-ovulation.
Since progesterone is the hormone that causes the upward shift in temperature at ovulation, the theory is that increased progesterone from pregnancy might cause another upward shift in temperature."
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