Normal Pregnancy: First Trimester

Fetal development in the first trimester

The first trimester lasts from week 1 through week 12.

ByHealthwise Staff
Primary Medical ReviewerSarah Marshall, MD - Family Medicine
Specialist Medical ReviewerKirtly Jones, MD - Obstetrics and Gynecology

Current as ofMarch 16, 2017

Current as of: March 16, 2017

Author: Healthwise Staff

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