20 Weeks Pregnant: What's Going On

Your baby's brain has been working overtime developing the nerve centers dedicated to the senses. And that rhythmic jerking you may feel? Baby hiccups! Find out more about pregnancy week 20.

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26 Weeks Pregnant: What's Going On

Your baby's nostrils are starting to open up, which means that your baby can start taking some practice breaths — with amniotic fluid instead of air. Get more details on pregnancy week 26.

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15 Weeks Pregnant: What's Going On

Ultrafine body hair may appear on your little one this week. Your nausea and fatigue may have subsided, but you may have some mild swelling in your hands and feet. Learn more about pregnancy week 15.

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19 Weeks Pregnant: What's Going On

Your little one's skin is making a creamy substance called vernix. And perhaps you've got dark patches on your face — a temporary condition called chloasma. Get the details on pregnancy week 19.

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16 Weeks Pregnant: What's Going On

Those little arms and legs are moving frequently — quite a workout going on. Meanwhile, you may be huffing and puffing a little. Get more details on pregnancy week 16.

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18 Weeks Pregnant: What's Going On

What's new with your little one this week? Fingerprints. Pads of fat accumulating on the fingertips and toes will turn into distinguishing swirling lines. Find out more about pregnancy week 18.

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25 Weeks Pregnant: What's Going On

Your baby's brain continues to develop as the cortex forms layers. Feeling a bit squished? That's because your uterus is now about the size of a soccer ball. Learn more about pregnancy week 25.

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14 Weeks Pregnant: What's Going On

With each passing week, your little one looks more like the little person you'll meet when you give birth. Your body continues to change, too — good-bye, waistline. Learn more about pregnancy week 14.

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22 Weeks Pregnant: What's Going On

Lots of new developments this week. Your baby has eyebrows and eyelids and is busy exercising those arms and legs. Get more details on pregnancy week 22.

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24 Weeks Pregnant: What's Going On

Is your little one practicing for the Baby Olympics? Babies are most active between 24 and 28 weeks, so enjoy the jumps and dives, rolls and kicks. Find out more about pregnancy week 24.

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27 Weeks Pregnant: What's Going On

After being fused shut for more than four months, your baby's eyelids open again. Your baby can see lights and shadows but can't make out objects yet. Learn more about pregnancy week 27.

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17 Weeks Pregnant: What's Going On

Your little one starts to plump up a bit this week. The fat helps produce and retain body heat. Given your new shape, maybe it's time to shop for new clothes. Learn more about pregnancy week 17.

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21 Weeks Pregnant: What's Going On

Your baby is about the size of a banana now. And with a stethoscope you may be able to hear your little banana's heartbeat, which may sound like a galloping horse. Learn more about pregnancy week 21.

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