Collection
Pregnancy, Week by Week
Due dates, how far along you are, what each stage brings and the numbers to know.
Guides in this collection
- Guide
How Many Weeks Pregnant Am I? (And How Pregnancy Is Counted)
Pregnancy is counted in weeks from your last period, not conception. Here’s how to work out how many weeks pregnant you are and which trimester you’re in.
May 30, 2026 · 5 min read Read more → - Guide
How to Calculate Your Due Date (3 Simple Methods)
Learn how your estimated due date is worked out from your last period, conception date, or ultrasound — and why babies rarely arrive on the exact day.
Jan 15, 2026 · 5 min read Read more → - Guide
How Accurate Is Your Due Date?
Only about 1 in 20 babies arrive on their due date. Here’s how accurate due dates really are, why babies come “late,” and what the 37–42 week window means.
May 30, 2026 · 5 min read Read more → - Guide
The First Trimester: What to Expect (Weeks 1–13)
A calm guide to the first trimester — common symptoms, key milestones like the first scan, what’s safe, and when to call your provider in early pregnancy.
May 30, 2026 · 5 min read Read more → - Guide
Pregnancy Weight Gain by Week: How Much Is Healthy?
How much weight to gain in pregnancy by BMI and week — where the weight goes, the week-by-week pattern, and why your provider’s advice always comes first.
May 31, 2026 · 5 min read Read more → - Guide
hCG Levels in Early Pregnancy: What Doubling Means
hCG levels in early pregnancy explained — what the hormone does, how fast it rises and doubles, why single numbers vary, and what the trend really tells you.
May 31, 2026 · 5 min read Read more →
Helpful tools
Pregnancy Week Tracker
See how many weeks along you are and what’s happening this week.
Open tool →Due Date Calculator
Find your estimated due date from your last period or conception date.
Open tool →Pregnancy Calendar
Turn your due date into a calendar of scans, milestones and the big day — add it to Apple, Google or Outlook.
Open tool →Pregnancy Weight Gain Calculator
See a healthy weight-gain range for your pre-pregnancy BMI and week.
Open tool →hCG Doubling Calculator
Check how fast your hCG levels are rising between two blood tests.
Open tool →