Normal Pregnancy: First Trimester

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Fetal development in the first trimester

The first trimester lasts from week 1 through week 12.

ByHealthwise Staff
Primary Medical Reviewer Sarah Marshall, MD - Family Medicine
Specialist Medical Reviewer Kirtly Jones, MD - Obstetrics and Gynecology

Current as ofSeptember 9, 2014

Current as of: September 9, 2014

Author: Healthwise Staff

Medical Review: Sarah Marshall, MD - Family Medicine & Kirtly Jones, MD - Obstetrics and Gynecology