Billings ovulation method
The Billings ovulation method is a method in which women use their vaginal mucus to determine their fertility. It does not rely on the presence of ovulation, rather it identifies patterns of potential fertility and obvious infertility within the cycle, whatever its length. Effectiveness, however, is not very clear.
| Billings ovulation method | |
|---|---|
| Background | |
| Type | Behavioral |
| First use | developed in 1950s |
| Failure rates (first year) | |
| Perfect use | 0.5–3% |
| Typical use | 1–22% |
| Usage | |
| Reversibility | immediate |
| User reminders | Accurate teaching and daily charting are essential. |
| Clinic review | None |
| Advantages and disadvantages | |
| STI protection | No |
| Period advantages | Prediction |
| Weight gain | No |
| Benefits | Low cost, no prerequisites for use, no side effects, can aid pregnancy achievement |
| Risks | Nil |
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