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When you are 12 weeks pregnant, your baby’s brain is entering an intensive development phase. Stay away from alcohol, drugs, and cigarettes. And eat healthy foods!

By the end of this week, the risk of miscarriage is down to below 2.5% and even less if a live embryo has been seen at an ultrasound scan.

This article will cover fetal development, how big your baby is, what month you are actually in, pregnancy symptoms, and what’s happening with your body, mom.

Week 11 | Week 13

12-weeks-pregnant info

What to Expect when 12 Weeks Pregnant

How Many Months is 12 Weeks Pregnant?

The fetal age of your baby is now 10 weeks and you are approaching the final stage of your 1st trimester (lasting only one more week).

You are 2 months pregnant but in your third month – and you have soon completed it!.

Many women will breathe a sigh of relief at this point as the risk of miscarriage is significantly reduced. By pregnancy week 13, the average risk of miscarriage is down to below 2.5%, compared to 4.9% in week 9 and between 10% and 20% on average for the whole first trimester. You can learn more about miscarriage statistics week by week here.

Many choose to start announcing the big news. You are now almost 1/3 through your pregnancy. Weird.

Your Baby’s Development

How Big is My Baby at 12 Weeks?

Your baby is now just over 2 inches long (5 cm), and weighs close to half an ounce (14 grams). That’s about the size of a lime.

Interestingly, at this time during pregnancy, most babies are of the same length. Later on, the length will start to vary due to genes. But right now, measuring the length of the fetus is an excellent way of estimating your due date.

What Does my Baby Look Like when 12 Weeks Pregnant?

what does my baby look like at 12 weeks

At 12 weeks, your baby looks like a little human.

Eyes, ears, and nose are more or less now in their correct places, which of course is vital for a pretty baby-looking face. You can see the nose tip in the ultrasound image above. :-)

Fetal Development in Pregnancy Week 12

Some cool baby milestones this week:

  • The biggest thing for your little one this week is the developing reflexes. Fingers will open and close, toes will curl, even facial expressions will change. Your baby can both scratch his nose and suck his thumb!
  • If you move a specific way, your baby will respond by moving as well, even if you can’t quite feel it yet. Muscles start responding to the stimulus development for a more natural movement for your baby.
  • The brain starts making hormones as well as the rapid development of the nerve cells while the kidneys start producing urine.
  • Actually, week 12 is the start of a critical development phase for your baby’s brain. Between week 12 and week 18 and later between week 24 and 36, brain development is particularly rapid and sensitive. Make sure you stay away completely from alcohol and nicotine.
  • The placenta is functioning effectively and blood now flows from the umbilical cord.
  • Muscles within the intestines also begin to practice contractions known as peristalsis in order to digest food later on.

Mom’s Body When 12 Weeks Pregnant

Pregnancy Symptoms Week 12

12 weeks pregnant bellyFor many women, 12 weeks pregnant is a turning point, with anxiety levels subsiding due to the dramatic drop in miscarriage risk.

Some women may find a number of positives this week including increasing energy, a change of libido, appetite change, and even less nausea than before.

If you are still experiencing your early pregnancy symptoms, don’t worry; you are not the only one.

Some women will experience the negative effects longer than others, while some women even feel them to some degree throughout their entire pregnancy. Which pregnancy signs are you experiencing? Vote in this poll and compare pregnancy signs with other moms.

Your Body and Belly at 12 Weeks

12 weeks pregnant bellyYour uterus is now about the size of a grapefruit.

No wonder, your baby bump might start showing a little bit.

You may also find yourself looking a little more bloated now from water retention, and you may notice as much as 2 or 3 pounds heavier showing up on your scale than before you got pregnant.

Some skin changes occur for a select group of women that may notice freckles or dark pigmentation in their faces, which may not always seem attractive to you, but are perfectly normal and are nothing to worry about. Use sunscreen when outside to prevent this.

The skin around your nipples and your areolas will darken and some women find that starting a moisturizing routine now will help later once your skin starts to stretch and grow with your baby.

Fun Stuff to Buy and Do This Week

And here I have listed a number of high-quality, useful online prenatal classes.

(If you live in the US and haven't signed up for Rebaid yet, consider doing it! It is free to join, and you can receive amazing discounts when shopping at Amazon. Check them out here. )

Week 12 Pregnancy Video

Diary of a Daughter

What’s it really like being 12 weeks pregnant…? Here’s a true diary from a 12 weeks pregnant mom (Me..!)

Week 12 – now the risk of miscarriage is going down. My husband wants me to announce our pregnancy at work. I want to put it off until after the nuchal fold screening test next week.

Tired again…

Are you also 12 weeks pregnant? Please share your experiences and thoughts by leaving a comment below! :-)

Read Next


Mayo Clinic, Mayo Clinic Guide to a Healthy Pregnancy
Joanne Stone MD and Keith Eddleman MD, The Pregnancy Bible: Your Complete Guide to Pregnancy and Early Parenthood
Nilsson, L; Hamberger, L. A Child Is Born
Soderberg, L., Mammapraktika. B Wahlstroms.

Week 11 | Week 13

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  1. KryssieK

    I am actually 11weeks and 3days pregnant….. It’s my first baby! We are so excited…. I told everyone as soon as I found out I am pregnant! So I have nothing to tell anyone haha