Source: billings.life · WOOMB International
Status: planned for v0.2. This page captures design choices ahead of implementation so reviewers can sanity-check the palette and rules before code lands.
The Billings Ovulation Method charts cycle days on a horizontal grid, one cycle per row. Each day cell carries a stamp (red / green / white / yellow), an optional baby-icon overlay (post-Peak counting days), and an X overlay on the Peak day.
| Color (palette key) | Standard color | Meaning |
|---|---|---|
bleedingRed |
red | Bleeding (menstruation, spotting) |
dryGreen |
green | Dry (Basic Infertile Pattern of dryness) |
discharge |
white | Any discharge / change from BIP |
dischargeBip |
yellow | BIP of unchanging discharge |
peak |
layer | X letter overlay (peak day) |
babyGreen |
green + baby | Post-Peak day 1/2/3, dry |
babyYellow |
yellow + baby | Post-Peak day 1/2/3, mucus but not slippery |
From data-model/.../models/cervical-fluid/billings/v0.json — six options:
| Source value | Renders as |
|---|---|
dry |
green |
unchanged |
yellow (BIP) |
sticky |
white |
cloudyWhite |
white |
wetSlippery |
white |
peak |
white + X overlay |
Bleeding always wins over mucus (red overrides white/green/yellow). Brown spotting renders red; the substate distinction is dropped on the Billings card (Billings's chart doesn't differentiate brown from regular bleeding).
- Baby icon — needs an asset (
docs/images/baby-glyph.svg) shared between green-baby and yellow-baby stamps. Inline-SVG path or a small PNG? - Counting-day numbers — Billings overlays
1/2/3on the post-Peak baby stamps. Use thecodefield of CellInput? Add a newnumberOverlayfield? Xpeak letter — sits on top of the white stamp. Already supported byCellInput.letter; no new primitive needed.
Planned, not yet committed:
docs/images/billings-chart-row.png— full multi-cycle row from the WOOMB chart.docs/images/billings-stamps-legend.png— the WOOMB stamp legend.docs/images/billings-peak-x.png— close-up of theXpeak overlay.
- Billings — Keeping a Record
- Billings Personal Record Chart (Natural Family Planning Toronto, PDF)
- WOOMB International — Online Charting Resources
- HDS canonical mucus model:
data-model/.../models/cervical-fluid/billings/v0.json