birthdate.baby Week

Week by week  /  Second trimester

Week 27

Your baby is about the size of a cauliflower. Here is what is happening, what you might feel, and the two or three things worth doing this week.

Size right now

A cauliflower

36.6 cm / 14.4 in, 875 g / 1 lb 15 oz

Length
36.6 cm / 14.4 in
Weight
875 g / 1 lb 15 oz
Trimester
Second
To go
13 weeks

The baby

Last week of the second trimester. The baby hiccups regularly, and you will feel it as a rhythmic twitch.

You

Sleep gets harder from here. A pillow between the knees helps more than it sounds like it should.

This week

Tdap vaccine window opens, 27 to 36 weeks
Order the crib and mattress, delivery times are the usual holdup

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Averages, not targets. Babies vary a great deal and a scan that reads differently from this page is not a problem. Anything that worries you is a call to your midwife or doctor, not a search.