The Very Beginning

Week 4 of pregnancy: implantation completion and early pregnancy confirmation

Week 4 of pregnancy: implantation completion and early pregnancy confirmation

Where week 4 fits in pregnancy dating Pregnancy is usually dated from the day of the ]], not from the day of . This can feel counterintuitive because, at 4 s pregnant, the itself is generally much younger, around 2 post-conception if occurred near the middle of a typical 28-day cycle. This dating system matters […]

Week 3 of pregnancy: fertilization implantation and early embryo development

Week 3 of pregnancy: fertilization implantation and early embryo development

Why week 3 is often the week of conception Pregnancy is usually dated from the day of the ]], not from the exact day of fertilization. This convention is used because the menstrual period is usually easier to identify than or . In a typical 28-day cycle, occurs around day 14, and fertilization may occur […]

Week 2 of pregnancy: ovulation conception timing and preparation for implantation

Week 2 of pregnancy: ovulation conception timing and preparation for implantation

Why week 2 is counted before conception Pregnancy is based on the day of the period, often abbreviated as LMP. This convention is used because the exact day of ovulation and is not always known, while the period is usually easier to identify. As a result, the two s of a dated pregnancy occur before […]

Week 1 of pregnancy: how it is calculated and what is happening in your body

Week 1 of pregnancy: how it is calculated and what is happening in your body

Why Week 1 is counted before you are actually pregnant The phrase “Week 1 of pregnancy” is a medical dating convention rather than a statement that an is already developing. In most spontaneous pregnancies, occurs around , typically about two s the first day of the ]] in a 28-day cycle. Because many do not […]