Pregnancy lasts an average of 280 days (40 weeks) from the first day of your last menstrual period (LMP). The first day of your LMP is considered day 1 of pregnancy, even though you probably didn't ...
PregaTips on MSN
Why doctors call this “pregnancy” even before conception
Medical professionals often begin counting pregnancy from the first day of a woman’s last menstrual period (LMP), which can confuse many expecting parents. The approach means the first two weeks of ...
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