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Third Trimester: Images of Your Developing Baby

We've partnered with the American Institute of Ultrasound Medicine (AIUM), Johns Hopkins, and the March of Dimes to create this unique peak into Baby's development inside the womb. These images reveal all the intricate details of your baby's growth -- from a collection of cells to a full-term newborn. While most women may only receive one or two ultrasounds during pregnancy, which is normal, this slideshow of the 3rd trimester of pregnancy gives you a look at each week of development.
ultrasound week 34 Week 34 (32 weeks from conception)

Fetal Size: Length, 12 3/4 inches, crown to rump; total length 19 3/4 inches. Weight, 5 pounds

Fetal Development Milestones: Baby's lungs are continuing to mature and she's continuing to gain weight.

What You're Seeing: In this image of a profile, the baby's mouth is open. She may be drinking amniotic fluid or taking it into her lungs, which aids in the development of her respiratory system.