Like HowStuffWorks on Facebook!

Guide to Being 16 Weeks Pregnant


What's Going On in Your Body
That sonogram can reveal whether you should paint the nursery blue or pink.
That sonogram can reveal whether you should paint the nursery blue or pink.
Photodisc/Thinkstock

Although the little stinker is still quite some time away from looking like the baby you long to snuggle, he's undeniably on the path! Still just a peanut at a weight of only 2.8 ounces and crown to rump length of about 4.5 inches or so, your little guy or gal is now sporting fingernails, eyelashes and hair, among other equally adorable assets. He's also able to move his itty-bitty appendages, and his muscles are capable of responding to commands from his brain.

At long last, the sex organs are now developed and can be visualized using an ultrasound. A few of you lucky ducks will be able to learn this week whether your future will hold monster trucks or baby dolls, but many of you will have to wait just a bit longer. Most physicians and midwives require the pregnancy to be at least in the 18th week of gestation before the "big" ultrasound takes place.

Before you get all riled up, bear in mind that they're not intentionally trying to annoy you. Instead, they want to wait until the fetus is more developed so that they can more easily identify any defects or other issues of concern. Think of this as an exercise in patience, which you'll surely need in excess once the toddler years roll around.


More to Explore