Vulvar Observation

Vulvar observation is the practice of checking cervical mucus at the vulva, the external genital area outside the vagina. A woman notes the sensation at the vulva and examines any mucus on folded white tissue. She also checks how far the mucus stretches.¹ This check is the main source of chart data in the Creighton Model FertilityCare System and the Billings Ovulation Method. In the Creighton Model, she makes the check each time she uses the bathroom during the day.

Sensation and sight together give more information than sight alone. As estrogen rises, a woman often feels a change at the vulva during normal daily activity. That sensation can come before any mucus appears on the tissue. Recording the sensation along with what she sees helps her identify the fertile window earlier in the cycle.² Billings research showed that this sensation at the vulva is a reliable sign of approaching ovulation. The mucus changes that she can observe there closely follow the hormonal changes of the cycle.

The Creighton Model uses external checks only, by design. The method does not ask a woman to reach inside the vagina to sample mucus from the cervix. The check always takes place at the vulva, at each bathroom visit. A consistent technique makes the results comparable across a whole day. It also allows different trained practitioners to interpret the chart in the same way.³

These checks matter beyond timing. Steady, consistent checks are the raw data behind careful chart review. Every entry in the Vaginal Discharge Recording System comes from these checks. An accurate check produces an accurate chart. An accurate chart shows which health patterns a clinician can identify.⁴