Last updated: March 2, 2026 by Dr. David Park

Track Your Pregnancy Week by Week

Formula

Pregnancy is divided into three trimesters spanning approximately 40 weeks. The first trimester (weeks 1-13) is critical for organ development, the second (14-27) brings rapid growth, and the third (28-40) prepares baby for birth.

Knowing your current week helps you understand which developmental milestones are happening and what symptoms to expect.

Common use cases:

  • Monitoring pregnancy milestones
  • Preparing for prenatal appointments
  • Understanding fetal development stages

Frequently Asked Questions

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Dr. David Park

Applied Mathematician, PhD Mathematics

David holds a PhD in Applied Mathematics from MIT. He has published research on numerical methods and computational algorithms used in engineering and scientific calculators.

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