FAQ — FertiCycle
Answers about ovulation, due dates, week counting, and how to use the calculators.
This information does not replace medical advice. Consult a healthcare professional for fertility or pregnancy questions.
How is ovulation calculated? ⌄
We estimate ovulation 14 days before the next expected period, based on cycle length. This is an approximation — cycles vary and ovulation can shift.
What is the fertile window? ⌄
The period when unprotected sex can lead to pregnancy. Sperm survives several days; the egg about 24 hours. We show a 6-day window centered on estimated ovulation.
How is the due date calculated? ⌄
From last period: Naegele's rule (+280 days). From conception: +266 days. IVF day-5: +261 days after transfer. Only a clinician can confirm your EDD.
Gestational weeks vs conception weeks? ⌄
Medical counting starts on the first day of your last period — before conception. That's why pregnancy is about 40 gestational weeks.
How reliable are the results? ⌄
These are educational estimates only. Irregular cycles, stress, conditions, or treatments can change ovulation and due dates. See an OB-GYN or midwife for personalized care.
Can I share my results? ⌄
Yes: after calculating, the URL contains your parameters. Copy the link to save or share (no personal data beyond the dates you entered).