Pregnancy Week 13

Your beautiful baby is the size of a Meyer lemon this week—and his vocal cords are beginning to develop.

Baby's Length: 2.91in.
Baby's Weight: 0.81oz.

From tripping to dropping dishes, you might be feeling clumsier these days. Relaxin, another hormone that messes with you during pregnancy, loosens up your ligaments and joints in preparation for birth. Even though you need the extra give only in your pelvis, the hormone works on your entire body, which means your hands and feet are affected, too.

Your baby is constantly getting bigger and cuter, and his face is looking more human-like every day. His ears have moved up from his neck into place and his eyes—which are looking more and more like your baby blues (or browns, or greens)—have moved from the sides of the head to the front of the face. Up until now, his head has been outpacing his body, but now his body is growing faster. His legs still need to grow longer, but this week his arms will lengthen to be proportionate with his body, and he'll be able to stick his thumb in his mouth. Also by now, all of your baby's essential organs and systems have formed.

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Don't forget to keep up with your regular dental checkups. According to the Mayo Clinic, about 80 percent of expectant mamas suffer from gum softening or bleeding.

In this profile shot, notice that the baby-to-be is lying with her bottom on the left-hand side of the image and her head to the right. (Even though the fetus is referred to as "she" here, the sonographer may or may not be able to identify the baby's gender at this point.) Her legs are clearly visible raised up, knees bent. The line across the middle of the profile is the sonographer's measurement of baby's crown-rump length (CRL). With this measurement, the sonographer is able to determine your baby's age. 

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It's Week 13 and, for many of you, the fog of the first trimester is finally lifting: You're probably starting to feel like your old self again, minus the constant nausea and irksome food aversions. But out with the old and in with the new: With the start of the second trimester often comes extreme hunger. It sometimes feels like your body is making up for everything it missed out on in the last three months and wants to eat everything in its path (minus those food aversions—those tend to stick around). Good thing you're eating for two... But are you? It seems science always wants to burst your happy bubble.

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