Answer to Question 1
Pregnancy begins at conception; that occurs approximately 14 days before a woman's next menstrual period is scheduled to begin and ovulation occurs. Assessment of duration of pregnancy as weeks from conception is termed gestational age. Commonly, however, pregnancy duration is measured from the date of the first day of the last menstrual period (LMP). Time in pregnancy estimated from LMP reflects menstrual age.
Answer to Question 2
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