31 Weeks Pregnant
Your baby is the size of a

When you're 31 weeks pregnant, you've come a long way in your pregnancy journey, and before you know it, the day will arrive when you meet your little one! Keep reading for more information on your baby’s development, the symptoms you may be experiencing, and some important things to consider at 31 weeks pregnant.
Highlights at 31 Weeks Pregnant
Here are some of the highlights and action items from 31 weeks pregnant:
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31 Weeks Pregnant: Your Baby’s Development
Now that you’re 31 weeks pregnant, it's good to know what's going on with your baby's development.
If you’re 31 weeks pregnant with twins, check out our twin pregnancy week-by-week guide to find out more about what your little ones are up to.
How Many Months Is 31 Weeks Pregnant?
If you’re wondering what 31 weeks is in months, you won't find a single, standard answer, as there are various ways to group the 40 weeks of pregnancy into 9 months. However, at 31 weeks gestation, you’re likely coming to the end of your seventh month of pregnancy.
Around 31 weeks pregnant, it’s also common to wonder how many days are left until you give birth. Usually, your healthcare provider will provide you with an estimate of your due date, but you can never be 100 percent sure when your little one will decide to make an appearance.
How Big Is a Baby at 31 Weeks Pregnant?
At 31 weeks pregnant, your baby is about the size of a coconut and may weigh close to 4 pounds. They are growing rapidly during this period and will need plenty of nutrients to continue this growth.
Your Baby: What Does 31 Weeks Pregnant Look Like?
Check out the illustration below for a sense of what your baby may look like and their position at 31 weeks pregnant.
Your Body at 31 Weeks Pregnant
Around 31 weeks pregnant, you may be noticing some pregnancy-related changes to your breasts. For example, you may start to see reddish streaks on the skin—hello, stretch marks!
There’s not much you can do to prevent stretch marks forming on your breasts, or elsewhere for that matter, but the striations may fade with time after you give birth. Try to stay hydrated and keep your skin moisturized—this may also help to ease any itchiness of the skin. As your breasts grow, you may also find that you need to go up a bra size or two so that you get proper support. If you haven’t already, head to your local maternity wear store or department store and ask for a professional maternity bra fitting.
Maternity bras often have wider straps, more coverage in the cup, and extra rows of bra hooks so you can adjust the size as needed. Plus, you can continue using them after your baby is born! There are also night-time maternity bras that provide extra support while you sleep, and maternity sports bras, too.
Later in the third trimester, your breasts may leak a thick, yellowish fluid called colostrum. Not all pregnant people experience this leakage, but, if you do, you can tuck a gauze pad or a nursing pad into your bra to absorb the colostrum.
Once your baby is born, colostrum provides a breastfed baby with nourishing proteins and antibodies. Colostrum is produced for a few days before breast milk starts flowing.
31 Weeks Pregnant: Your Symptoms
At 31 weeks pregnant, here are some of the symptoms you may be experiencing:
How Big Is a Pregnant Belly at 31 Weeks?
At this point in your pregnancy, the size of your bump is increasing as your baby continues to grow and your uterus expands. Around 31 weeks pregnant, you may experience some weight gain, and your bump might have grown to be midway between your breasts and belly button. Throughout this article, you can read some of the effects of your growing belly and how to make yourself as comfortable as possible.
What Does 31 Weeks Pregnant Look Like?
For a clearer view of what your belly might look like around 31 weeks pregnant, check out the image below.
31 Weeks Pregnant: Things to Consider
As you get closer to your due date, you may have many things on your mind, including delivery methods and how to get the best night’s sleep. Keep reading for more information:
31 Weeks Pregnant: Questions for Your Healthcare Provider
At 31 weeks pregnant, you may have many questions to ask your healthcare provider. Here are some common ones to ask around 31 weeks:
FAQS AT A GLANCE
Although the 40 weeks of pregnancy don’t fit neatly into 9 months, you’re generally considered in your seventh month at 31 weeks of pregnancy—but you may be on the cusp of your eighth month.
31 Weeks Pregnant: Your Checklist
Here are some helpful to-dos to consider around 31 weeks pregnant:
☐ Decide who you would like to be with you for support during labor. It could be a doula —a non-medical professional who can give you emotional and practical support during labor and childbirth—or it could be your partner, best friend, or family member.
☐ Although you may have already discussed maternity leave with your employer, now could be a good time to revisit your plans and start to share your workload with your colleagues so that crucial tasks aren’t left to the last minute.
☐ Have a little fun exploring What’s Your Pregnancy Personality and Can You Tell Pregnancy Fact From Fiction. Take our quizzes to find out!
☐ Check if there’s any paperwork you still need to organize for your maternity leave, and have your partner do the same should they be taking any leave, such as paternity leave.
☐ If you have a little time this week, check out the lists of best baby products as voted by Pampers Parents. Whether you’re wondering which is the best crib or car seat, or which is the best baby bottle or breast pump, Pampers Parents have you covered.
How We Wrote This Article The information in this article is based on the expert advice found in trusted medical and government sources, such as the American Academy of Pediatrics and the American College of Obstetricians and Gynecologists. You can find a full list of sources used for this article below. The content on this page should not replace professional medical advice. Always consult medical professionals for full diagnosis and treatment.
- American College of Obstetricians and Gynecologists. Your Pregnancy and Childbirth: Month to Month, 6th ed. (Washington, DC: American College of Obstetricians and Gynecologists, 2015).
- American College of Obstetricians and Gynecologists. Your Pregnancy and Childbirth: Month to Month, 7th ed. (Washington, DC: American College of Obstetricians and Gynecologists, 2021).
- Cleveland Clinic. “Having a healthy Pregnancy.”
- Kids health. “Week 31.”
- Mayo Clinic. “Fetal development.”
- Mayo Clinic. Guide to a Healthy Pregnancy, 2nd ed. (Rochester, MN: Mayo Clinic Press, 2018).











