12 Weeks Pregnant: Symptoms & Baby Development - Babylist
12 Weeks Pregnant
June 7, 2022

12 Weeks Pregnant

Babylist editors love baby gear and independently curate their favorite products to share with you. If you buy something through links on our site, Babylist may earn a commission.
Pinterest logo.
12 Weeks Pregnant.
12 Weeks Pregnant

How Big is Your Baby at 12 weeks?

Your baby is 2.1 inches long and weighs .49 ounces this week. That’s about the size of a roll of film.

Here’s what else to know when you’re 12 weeks pregnant:

Your Baby’s Development at 12 Weeks

The end of the first trimester is near! And if you have a prenatal checkup this week, you’ll probably be able to hear your baby’s heartbeat with a fetal doppler.

  • Major growth: Whoa! Your baby doubled in size over the past three weeks. At the ninth week of pregnancy, they were only about an inch long, and now your 12-week fetus is almost 2 inches.
  • Digestive progress: Your baby’s intestines are fully developed, and they’re starting to change position, moving from near the umbilical cord into their rightful place, the abdomen.
  • Cuter face: If you peek inside your belly, you’d see baby’s face is looking more like…well, a baby, than ever before. This week, their eyes and ears are in (or close to) their permanent spots, making your baby camera-ready for the upcoming 12-week ultrasound.

Your Baby’s Reflexes

When you’re 12 weeks pregnant, your baby is developing reflexes. Eyelids are starting to open and close, and they’re sucking with their mouth. Later, fingers will open and close, and toes will curl. Most of these reflexes start to develop in utero and stick around for a while after they’re born. Then eventually, they’ll be replaced by voluntary movements. Here are a few you may notice post-birth:

  • Moro reflex: Newborns seem to startle easily! When there’s sudden movement or a loud noise, they’ll throw out their arms and legs and then pull them back in toward their body. Your baby already has this reflex (it starts at about the 8th or 9th week of pregnancy), and it should go away by the time they’re four months old.
  • Palmar grasp: Ever notice how a newborn will hold on to a finger or almost anything else you put in the palm of their hand? Right about now, your baby already has this reflex. It’s a strong reflex until about two or three months post-birth and then disappears around the first birthday.
  • Babinski reflex: When you stroke the bottom of a newborn’s foot, their toes will fan out, and the rest of the foot will curl. So cute! This reflex will develop around the 18th week of pregnancy and go away by six months post-birth (though sometimes it can last until 2 years).

💛 Congratulations 💛

There are 196 days until your baby is due.

12 Weeks Pregnant Ultrasound


Your Body: 12 Weeks Pregnant Symptoms

Your HCG levels are likely super high at 12 weeks pregnant, but they should start to level off very soon. Not feeling any pregnancy symptoms? You may have made it through the first trimester without any! If you are, though, there are some things you may be feeling.

  • Headaches: At 12 weeks pregnant, headaches can be triggered by the fact that your hormones are raging like you’re back in ninth grade. Dehydration and drops in blood sugar can contribute, too, so drink plenty of water and snack regularly to help prevent them.
  • Darker skin spots: Patches of dark skin on your face—a.k.a. the mask of pregnancy/melasma/chloasma can appear. That’s because hormonal changes have upped the amount of melanin, which creates pigment, in your body. Remember, your skin is more sensitive to sunlight now. So limit your time in the sun, and wear a hat, sleeves and SPF 30 or higher sunscreen.
  • Dizziness: Those lovely hormones also relax blood vessels, which means better blood flow to baby, but possibly less to your own brain, since your blood pressure may be lower than usual. Keep up the snacking to avoid low blood sugar, which can also cause of dizziness or lightheadedness.
  • Morning sickness: You may be tired of feeling sick, we know, but remember: you’re still in early pregnancy. Morning sickness can linger until you’re comfortably into the second trimester. Just let your healthcare provider know if you can’t keep any foods down or if it continues over the next few weeks.

Top Tip for 12 Weeks Pregnant

Stall on buying maternity pants by using a hair tie or a rubber band to hold your jeans closed. Put the rubber band through the buttonhole and loop both ends around the button. Ta-da!

Your Life at 12 Weeks Pregnant

Oh, baby! You’ve almost made it a third of the way. Here are some ideas to help you finish out the first trimester strong.

  • Be your BFF: Be gentle on yourself. The end of the first trimester is a major milestone, but if you still feel crummy—or on the flipside, if symptoms have faded and you don’t “feel pregnant” anymore—it’s OK to be more nervous than relieved as you enter the second trimester. Share your feelings with a trusted friend, or take a break from them with a classic fun flick, like Roman Holiday or The Breakfast Club.
  • Mood booster: Sometimes it can feel like pregnancy is all about what you can’t do—no hot tubs, no alcohol, no heavy lifting. Counteract those nos with a list of pregnancy-safe fun, like your favorite form of exercise (when you feel up to it) or an evening out with friends—shout out to mocktails! Tack it to your bathroom mirror or fridge, and if you ever feel a bout of the pregnancy blues, you’ll know where to look for mood-boosting inspiration.
  • R&R: Practice putting your feet up. It’s a good habit to savor as the weeks progress. Grab your Kindle, iPad or a book and a warm mug of tea (or a cold bubbly water with lemon, depending on the weather), and don’t get up until you need a refill (or have to run to the bathroom. Again).
  • Helpful hint: There’s nothing like seeing the first image of your growing baby. But ultrasound photos fade with time. If you want to hold onto yours, be sure to take a digital snap. You can also search on Pinterest or Etsy for unique ways to preserve and display these precious pics.

Your Pregnancy, Week by Week

Want to know what’s going on with both your baby and your body every week? Start your Babylist registry today and get friendly tips and expert advice delivered right to your inbox for each week of your pregnancy (and beyond!).

Your 12 Weeks Pregnant Belly

During this week of pregnancy, your uterus is starting to grow up and out of your pelvis, which explains why your pants are getting tighter. Sure, you might look more like you have a burrito belly than a 12-week baby bump right now, but that will change quickly in the coming weeks.

12 Weeks Baby Bumps from Real Moms

12 weeks pregnant belly natureheadd

12 weeks pregnant belly pictures home.styling.mumma

12 weeks pregnant bump interiorsbysarah

12 weeks pregnant picture kl haworth

12 weeks pregnant pictures hongs style

12 weeks pregnant belly first baby tiffe626

12 weeks pregnant belly second baby wildandfree in mi

12 weeks pregnant size michalina.be

12 weeks pregnant showing richlandhoneybees

Do you think this content is helpful? Let our editors know!

12 Weeks Pregnant Checklist

  • This sounds crazy early, but if you are considering daycare, call a few to see if they have waitlists and when the earliest spots are available. This will help you plan when you need to start looking.
  • Even if you’re not showing, go ahead and pick some maternity staples to add to your wardrobe. (Here are some brands we love.) For fashion inspiration, check out maternity subscriptions or rental options. They’re particularly useful if you have a job that requires formal dress or you go to a lot of events.
  • Think about a fun way to save and share your ultrasound pictures. You probably won’t have time once the baby’s born.
  • Brainstorm a fun way to announce your pregnancy. Here are some clever ideas.
This information is provided for educational and entertainment purposes only. We do not accept any responsibility for any liability, loss or risk, personal or otherwise, incurred as a consequence, directly or indirectly, from any information or advice contained here. Babylist may earn compensation from affiliate links in this content. Learn more about how we write Babylist content and the Babylist Health Advisory Board.