Pregnancy week by week

Pick your week, or work it out from your dates. Weeks 1 to 6 have full write-ups; the rest are short placeholders for now.

What week are you?

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 an optional cycle-length tweak.

Open due date calculator

About this site

A plain week-by-week guide written from reliable public health sources. General information, not medical advice.

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