Pregnancy weeks
Week counting, trimesters and the labels used along the way.
Pregnancy Weeks vs Months: Why the Numbers Never Match Perfectly
A simple explanation of why pregnancy weeks and calendar months do not line up neatly.
Why Pregnancy Is Counted From Your Last Period, Not Conception
Why pregnancy weeks start from the first day of the last period, even though conception usually happens later.
Understanding Trimester Boundaries: Where One Stage Ends and Another Begins
A simple guide to how first, second and third trimesters are defined in pregnancy, and what these boundaries mean in practice.
Gestational Age vs Fetal Age: Why They’re Different
A calm explanation of why doctors count pregnancy weeks from your last period and why that number is usually about two weeks ahead of conception.
Early, Full and Late Term: What Those Pregnancy Labels Mean
A plain-language explanation of what early term, full term and late term mean, without giving individual medical advice.
How Many Weeks Pregnant Am I? Understanding the Number
A calm walkthrough of what “weeks pregnant” means, why it starts before conception, and why different tools sometimes show different week numbers.
