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Fertile window

By Ángela Simón Sánchez1 min readUpdated October 21, 2026

If you are trying to conceive, sex every 1 or 2 days usually helps. If you are not, remember that unprotected sex during the fertile window can end in pregnancy: use effective contraception or avoid unprotected sex. Calendar-only predictions can be off, because ovulation can vary even with regular cycles.

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About this article

Written by

Ángela Simón Sánchez

Family physician and sex therapist · Seitō

Commissioned by LoveLust

Sources

  1. NHS. Periods and fertility in the menstrual cycle
  2. NHS. Trying to get pregnant
  3. ASRM (2021). Optimizing natural fertility

This information is educational and does not replace assessment by a medical professional. LoveLust is not a medical device and does not diagnose, treat, cure or prevent any medical condition.

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