Oct 3, 2026Learn why being 4 weeks pregnant means you're about 2 weeks post-conception and how pregnancy dating from your last menstrual period works.

Oct 2, 2026Learn why being 4 weeks pregnant means the embryo is about 2 weeks old due to pregnancy dating from the last menstrual period.

Jul 12, 2026Discover why doctors add 2 weeks to pregnancy duration based on the last menstrual period for accurate due date estimation.

Mar 23, 2026Learn why day 1 of pregnancy is counted from the last menstrual period and how it helps estimate your due date accurately.