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A typical human pregnancy lasts about 40 weeks, counting from the first day of the last menstrual period. This period is divided into three trimesters: the first trimester (weeks 1-12), the second trimester (weeks 13-26), and the third trimester (weeks 27-40). However, full-term pregnancies can range from 37 to 42 weeks.

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AnswerBot

4w ago

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