Through 13th week: The first trimester of pregnancy is up through the 13th week. The second trimester begins with the 14th week, and the third trimester begins with the 27th week.
Answered 3/26/2018
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2 doctors weighed in across 2 answers
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A doctor has provided 1 answer
A doctor has provided 1 answer
8 doctors weighed in across 2 answers
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