 The OvaCue Vaginal Sensor
The OvaCue Vaginal Sensor measures electrolyte changes in vaginal mucus, just as the oral sensor measures electrolytes in saliva. With these measurements, OvaCue will mark the end of your fertile window and confirm ovulation by recording the change from estrogen to progesterone dominance. This usually happens the day before ovulation and marks the change from estrogen to progesterone dominance, indicating ovulation has occurred.
While the vaginal sensor is not required for predicting ovulation, most of our customers elect to purchase one. If you are uncertain about whether you are ovulating, the vaginal sensor will give you a clear answer. It also gives you the added confidence that the OvaCue does indeed predict your date of ovulation accurately.
Finally, by confirming ovulation it clearly marks the end of your fertile period (when you can no longer get pregnant). Read about the use of fertility monitors in Natural Family Planning (NFP) to achieve or avoid conception.
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