Pregnancy usually lasts 40 weeks or about nine months. Every three months are grouped into a trimester. There are three trimesters: First Trimester (weeks 1-13), Second Trimester (weeks 14-27), and Third Trimester (weeks 28-40).
To learn more about the different trimesters, view your B – UFC/ALTCS A Healthy Pregnancy Starts With You, page 8:
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