4 Months Pregnant
Four months pregnant is kind of a big deal. Lots of exciting milestones occur this month—not least of which is that you are now entering the second trimester. Read on to find out more about symptoms you may experience at 4 months pregnant and how your baby is developing this month, plus see our checklist on the kinds of things to take care of in the coming weeks.
Common Pregnancy Symptoms at 4 Months Pregnant
Although you might not experience all of them, these are some of the more common pregnancy symptoms at 4 months pregnant:
How Is Your Baby Developing This Month?
Though still quite small, your baby is already developing facial features and is also working on certain movements, like flexing the arms and legs and clasping hands into fists. When you’re 4 months pregnant, there’s still plenty of room for your baby to move around within the amniotic sac, so your little one is probably making the most of it.
At this point in your pregnancy, your little one is also starting to produce estrogen and testosterone, and genitals may be visible if you have an ultrasound exam at 4 months or a little later.
There’s more! Your baby can now swallow amniotic fluid, which means the kidneys are starting to produce urine.
And did you know that your little one is starting to hear sounds from the outside world? If you haven’t already, start talking, reading, and singing to your tiny, but very appreciative audience!
How Big Is Your Baby When You’re 4 Months Pregnant?
By the end of this month, your little one could measure about five inches long and weigh close to five ounces.
What Does a Fetus Look Like at 4 Months?
Check out these illustrations for a glimpse at what your baby might look like when you’re four months pregnant:
4 Months Pregnant: Your Body’s Changes
At 4 months pregnant, you’ve now entered the second trimester. This stage is often considered to be the “honeymoon” period of pregnancy—a time when many moms-to-be experience an energy boost.
If you’re feeling a little more energetic, why not use this trimester to take on some decorating, shopping, traveling, and any other preparations that require more effort and stamina?
You might be feeling great for other reasons, too. The nausea you may have experienced in the first trimester may have gone away by now, and your appetite may be back, making you feel a bit more like your old self.
You can also breathe a sigh of relief because the risk of miscarriage is significantly lower from this month onward. It's a good time to relax and really enjoy your pregnancy journey.
Although every mom-to-be and every pregnancy is unique, you might start showing this month if you haven’t already.
How Far Along Are You at 4 Months Pregnant?
So, what is the equivalent of 4 months pregnant in weeks? You might see a few different breakdowns for the weeks, months, and trimesters of pregnancy. At 4 months pregnant, you could be launching into week 13 or 14 and finishing the month at week 16 or 17, depending on how you're grouping the weeks into months. Either way, if you’re wondering how many weeks are in 4 months pregnant, there are four weeks. The second trimester usually extends from this month through month seven of pregnancy.

FAQS AT A GLANCE
Your baby can move in your belly when you are 4 months pregnant, but you won’t be able to feel this yet. Many moms-to-be feel their baby move for the first time at about 5 months pregnant.
Checklist for When You’re 4 Months Pregnant
4 month old baby - checklist
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.
- Book: Your Pregnancy and Childbirth: Month to Month, Sixth Edition Paperback – January 1, 2016 by American College of Obstetricians and Gynecologists (Author)
- Mayo Clinic: Gingivitis
- Mayo Clinic: Varicose veins
- Mayo Clinic: Pregnancy week by week
- Women’s Health: Urinary tract infections
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Read more2 Months Pregnant
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Read more5 Months Pregnant
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Read more9 Months Pregnant
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Read more1 Month Pregnant: Common Symptoms
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Read more6 Months Pregnant
The sixth month of pregnancy is a great time to prepare your nursery and babyproof your home before your energy begins to dip. Learn more here.
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Read more8 Months Pregnant
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Read more7 Months Pregnant
At 7 months pregnant, it’s an emotional time as your body continues to change and you get nearer to meeting your baby. Find out what’s happening this month.
Read more2 Months Pregnant
As your pregnancy continues into month 2, you will start to notice different physical and emotional changes. Learn more about these changes at 2 months pregnant.
Read more5 Months Pregnant
As your baby bump becomes more visible, you will also start to adjust to the physical changes taking place. Find out more about being 5 months pregnant.
Read more9 Months Pregnant
In the ninth month of pregnancy, your baby will be getting into position for birth. Find out what else you might experience during this final month.
Read more1 Month Pregnant: Common Symptoms
Mood swings, cramps, and unexpected food aversions. These symptoms and more are all normal in the first month of pregnancy. Read more about being 1 month pregnant.
Read more6 Months Pregnant
The sixth month of pregnancy is a great time to prepare your nursery and babyproof your home before your energy begins to dip. Learn more here.
Read more3 Months Pregnant
In the third month of pregnancy, morning sickness may subside, and it's important to focus on maintaining a healthy diet. Find all you need to know here.
Read more8 Months Pregnant
Entering the eighth month of pregnancy you’ll likely be feeling impatient. Learn about the symptoms you might experience and how to start preparing for birth.
Read more
