Third trimester

Weeks 28 to 40 · Days 190 to 280

The third trimester runs from week 28 to the end of week 40, days 190 to

• 280. Your baby roughly triples in weight, from about 1 kg (2.2 lb) to around 3.4 kg (7.5 lb), while the lungs and brain finish their preparation for life outside. Your job now is to rest when you can, prepare for birth, and know the signs that mean you should call.