Second 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 2nd trimester of pregnancy gives you a look at each week of development.

By Kristen J. Gough

American Institute of Ultrasound in Medicine - AIUM.org

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Week 14 (12 weeks from conception)

Fetal Size: Length, 3 1/4 to 4 inches, crown to rump; weight, around 1 ounce.

Fetal Development Milestones: Male or female genitalia are now formed. Baby's liver and spleen are producing red blood cells. Also, his or her upper limbs are proportionate to the rest of the body. The lower limbs are slightly shorter.

What You're Seeing: The sonographer has magnified the image to show the baby-to-be's profile. His head is on the right-hand side of the image and his hand is on his chest.

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Comments (26)

DearVanity wrote:

I found out Tuesday I'm having a boy, they said his growth is at 14 weeks and 3 days. whereas my due date states I'm at 13 weeks and 3 days. (:

9/29/2011 11:23:12 AM Report Abuse

d318830741 wrote:

im 24 weeks pregnant and found out im havin a baby boy his names gonna be justin mendel this is my firs baby im 36 yrs old and schared to death im still smokin like an idiot but cant seem to stop my hips hurt alot... my doctor says alot of her mothers smoke and 95 % are very healthy ive cut back alot so im happy about that im excited and schared at the same time.

9/5/2011 02:38:01 AM Report Abuse

nelvnaholloway wrote:

how mant weeks im i \

4/1/2011 12:52:12 PM Report Abuse

norma_elias06 wrote:

I found out on Tuesday 12-21-10 that we are having a girl, this is my third preg. I'm 14 weeks on Tuesday 12-28-10 they said they are 80 percent its a girl so i'm gonna wait until my 20 week ultrasound, so maybe at the end of next month we'll be reassured. I have two boys so it would be nice to buy some pink stuff.

12/24/2010 07:08:13 PM Report Abuse

baitshop0720 wrote:

I found out yesterday that I'm having boy. My husband seems to be happy but the ultrasound pics show the baby has two clubbed feet. Now my husband is really worried that might not be the only problem.

12/22/2010 02:04:31 PM Report Abuse