Mayla
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Scientific sources

What are Mayla's calculations based on?

The values Mayla uses to estimate your cycle, your fertility and your pregnancy (for example, the average length of the luteal phase, the fertile window of about six days ending on the day of ovulation, the basal body temperature rise rule, the due date at 40 weeks from the first day of the last menstrual period, the trimesters, the length of the postpartum period or the intervals for contraceptive methods) come from peer-reviewed scientific studies and from guidelines issued by recognized organizations, such as the World Health Organization (WHO), the International Federation of Gynecology and Obstetrics (FIGO), the American College of Obstetricians and Gynecologists (ACOG), the U.S. Centers for Disease Control and Prevention (CDC) and FDA-approved prescribing information.

These sources describe averages and ranges across populations of women. Your body may not follow them, which is why Mayla's predictions are estimates and not a diagnosis. We review the list when new guidelines are published.

Read the medical disclaimer

References

List last reviewed: 2026-10-16

References are cited in Vancouver style, in their language of publication, with their PubMed identifier (PMID), their DOI or their official link.

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  2. Wilcox AJ, Dunson D, Baird DD. The timing of the "fertile window" in the menstrual cycle: day specific estimates from a prospective study. BMJ. 2000;321(7271):1259-62. PMID: 11082086. doi:10.1136/bmj.321.7271.1259
  3. Dunson DB, Baird DD, Wilcox AJ, Weinberg CR. Day-specific probabilities of clinical pregnancy based on two studies with imperfect measures of ovulation. Hum Reprod. 1999;14(7):1835-9. PMID: 10402400. doi:10.1093/humrep/14.7.1835
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