Pregnancy Week by Week

A plain guide for weeks 1 to 40. Pick your week, or work it out from your dates. Not medical advice.

What week are you?

Jump straight to that week. Full write-ups are live for weeks 4, 5 and 6; other weeks are clear stubs for now.

Not sure? Work it out from your dates or pick from the grid below.

First trimester weeks 1 to 13

Second trimester weeks 14 to 27

Third trimester weeks 28 to 40

Due date calculator

Estimate from your last period, with optional cycle-length tweak.

Open due date calculator

About this revival

Pregnancy Guide Online is being rebuilt as an honest guide and an SEO case study. No ads, no affiliate links.

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