Normal 31 weeks pregnancy and ultrasound, your complete guide.

Normal 31 weeks pregnancy and ultrasound, your complete guide.


Hi everyone, today’s post is going to be about your 31-week pregnancy and ultrasound, as usual, I am going to talk about pregnancy symptoms, fetal development, prenatal visit and most importantly fetal ultrasound, if you are interested in this topic, let’s begin.

 At this point, there are still (more or less) 9 more weeks to go. But remember at week 37 your baby is considered Early-term.

31 week fetal image

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How Big Is Your Baby at 31 Weeks?

Your baby at 31-weeks will be as big as a Pineapple. The average 31-week fetus weighs about 3.3 lbs. or 1500 grams, and measures about 27.5 centimeters long.

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Normal Pregnancy symptoms at 31-weeks!!!

Shortness of breath: As your uterus keeps expanding, the compression against your lungs keeps increasing, causing you to feel short of breath. Don’t push yourself too hard, and slow down if you feel yourself gasping for air.

Braxton Hicks contractions: Braxton hicks contractions is when your uterus occasionally feel tight as it practices for labor. This is totally normal as long as the contractions go away when you change positions. Let your doctor know about any pain or contractions that don’t stop.

Frequent urination: Now that your uterus is putting a lot of pressure on your bladder, your trips to the bathroom might be more frequent.

Leaky boobs. That yellow liquid is baby’s first food called colostrum, and also your body’s practicing for nurturing.

Dry and brittle nails: Your nails might feel dry sometimes and are easily broken as well. Some moms-to-be have success with moisturizing oils. This may also be the perfect excuse for a trip to the beauty salon.

Backaches: Gentle stretching can help your back a lot. Also considering the pregnancy body pillow can be very beneficial as they can ease some of the pressure on your hips and help you get into a comfy position while sleeping. Treat yourself with love, remember you are getting to the point where everything hurts or is uncomfortable.

Clumsiness: Clumsiness is a super common symptom experienced to varying degrees at some point by most expecting women. Believe it or not, there’s actually biology and physics behind your newfound tendency to slip, trip, drop and plop.

Other Symptoms such as Round ligament pain and Pelvic and abdominal aches, occasional headaches, sleep problems, and pregnancy brain are still within the list of symptoms, all of them are completely normal at this stage.

Here you have some very helpful products at this time, the mommy giant pillow is a plus, it did wonders for me.

Looking for more info about fetal development and ultrasounds, or perhaps tips about motherhood or pregnancy tools? Check any link below.

Normal 30-week pregnancy and baby ultrasound, your complete guide

Normal 29-week pregnancy with baby ultrasound included. The useful guide.

Normal 28-week pregnancy and baby ultrasound, your complete guide.

Tips to practice mindfulness as a parent, the benefits of mindfulness.

All you need to know about Urinary tract infection, UTI on pregnancy.

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Fetal development at 31 weeks!!

Your baby’s brain is developing faster than ever these days. Connections between individual nerve cells are being made at a super fast rate. Your baby is now processing information, tracking light and perceiving signals from all five senses.

The pupils in the eyes of your baby can grow larger or smaller in response to the brightness.

The eyelids have lashes already, how beautiful is that!!

Your baby can make grasping motions with his hands, and the hair on his scalp is growing longer.

the lanugo which is that soft, downy hair covering your little human’s body is beginning to fall out.

What to know about doctor visits?

You’ll be keeping tabs on how often the baby’s moving and whether his or her movements are consistent from day to day.

Here’s how you do it: Pick a time of day and set a timer. See how long it takes to get to 10 fetal movements it should be less than two hours.

On the routine doctor visits, these parameters are still checked.

Your weight gain.
Blood pressure.
Fundal height.
Fetal presentation.
Heart rate with Doppler(of the baby)
Fetal movements.
Signs of preterm labor.

As usual, your doctor will follow up on any issues raised at your last appointment and review the results of any tests you’ve had since then. Your doctor will probably review with you, any contractions, swelling, headaches, or any other concerns you might have at this time.

You’ll be weighed and your blood pressure will be taken. You may be asked to give a urine sample to check for signs of preeclampsia, urinary tract infections, and other problems.

You should get the Tdap vaccine to help protect you and your baby from pertussis (whooping cough). Even if you’ve been vaccinated before, the U.S. Centers for Disease Control and Prevention recommend all pregnant women get a booster between 27 and 36 weeks.

If flu season is here or approaching, your practitioner should talk with you about the benefits of getting a flu shot if you haven’t already had one.

Since you may not be in any shape to make important decisions right after delivery. Now’s the time to start talking about whether you want your baby boy circumcised, whether you plan to breastfeed, and what you’d like to do for contraception after you have your baby.

If an ultrasound is ordered, this is what you can expect to see.


profile image of a baby seen on ultrasound

3D ultrasound image of a baby's face

3d ultarsound image of a baby's face

ultrasound image of fetal measurements in the womb

Fetal measurements are as follow Head ( Biparietal Diameter and Head Circumference), Abdominal circumference and Femur Length.


ultrasound image of the fetal heart doppler

ultrasound image of the 4 chambers of fetal heart

ultrasound feet view

boy gender as seen on ultrasound

girl gender as seen on ultrasound

Tips for You This Week

Prepare your Hospital Bag: Now’s a good time to start getting ready, just in case. Make sure to pack your birth plan, a nightgown, slippers, toiletries, snacks, baby gear and a going-home outfit for you. Most importantly, it’s crucial that you have a rear-facing infant car seat installed in the back seat of your car before you leave the hospital in order to drive your baby home, it’s required by law.

Keep yourself hydrated at all times, it will not only prevent you from getting into early labor, but also will help the placenta produce enough amniotic fluid for your baby, and also keeps your body and kidneys working efficiently and smoothly.

In conclusion

Here you have the most important information you need to know about your 31-week Pregnancy. You learn today about your baby development, Prenatal care (doctor visits) and Fetal Ultrasound at 31 weeks.

I hope this information was helpful to you. On my next post, I will be talking about 32-week pregnancy and ultrasound.

If you like this post keep sharing to other mommies. Let’s keep changing the world, one momma at a time!!!

Stay tuned for more helpful posts like this one.

XO Zadi.

Disclaimer: Due to HIPPA regulations all patient information is protected on this site. The majority of the Ultrasound images are my own. The information provided on my blog is designed to provide helpful information about the topic. And this post is made with the best of my knowledge. Therefore, this post is not intended to diagnose or treat any medical condition. For diagnosis or treatments consult your own physician. The author is not responsible or liable for any mistreated pathologies.


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Ultrasound sonographer for many years and mommy of 2 boys, I love my kids therefore I love what I do, help other women to achieve a healthy and successful pregnancy is my goal.

5 thoughts on “Normal 31 weeks pregnancy and ultrasound, your complete guide.

  1. I really loved this post 😍 so much information there! And lots of cute babies.. That lovely smile inside the womb! Just wow.. Praying one day I get lucky and have my own baby too lol 😍
    Have a beautiful day Zadi💫

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