Health Library

Fertile Window & Tracking

Evidence-informed guides about periods, ovulation, fertility and women's health.

8 articles

How Long Does Sperm Live? Understanding Sperm Survival and Ovulation

How long does sperm live? This is a common question for anyone who wants to understand the fertile window or their chances of getting pregnant.

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025 min read

Can You Get Pregnant Before or After Your Period? Understanding Your Fertile Window

Can you get pregnant during your period? Can you get pregnant after your period? The answer to both questions is yes, although the likelihood varies depending on when ovulation occurs.

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035 min read

Fertile Window: When Are You Most Fertile and When Should You Have Sex?

If you are trying to get pregnant, learning about your fertile window can help you identify the days when conception is most likely. The fertile window is the part of your menstrual cycle when sperm and an egg can meet, allowing pregnancy to happen.

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045 min read

BBT vs Ovulation Tests: Which Should You Use?

Basal body temperature and ovulation predictor kits work differently and serve different purposes. Learn the strengths and limitations of each to decide which fits your needs.

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055 min read

Cervical Mucus and Ovulation: What to Look For

Cervical mucus changes predictably throughout the cycle and offers a real-time indicator of approaching ovulation. Learn what to look for at each stage.

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065 min read

How Accurate Are Ovulation Trackers and Apps?

Ovulation tracking apps vary widely in accuracy depending on the method used. Learn how calendar-based, hormone-based, and wearable-based apps compare.

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075 min read

Basal Body Temperature: How to Track Ovulation with BBT

Basal body temperature tracking confirms ovulation after it occurs. Learn the correct method, how to read the chart, and common pitfalls that affect accuracy.

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085 min read

Fertile Window: When Are You Most Fertile?

The fertile window spans roughly six days each cycle. Learn exactly when it occurs, why timing matters, and how to identify it accurately.

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