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Third Trimester

30 Weeks Pregnant

Your baby is the size of a Cabbage 🥬

🥬
Ashok Kumar Poudel
Written by
Ashok Kumar Poudel
Health & Wellness Writer
Dr. Bina Basnet
Medically reviewed by
MBBS, MD — Gynecologist & Obstetrician
Last reviewed:
Feb 2026
📏
Size
Cabbage
📐
Length
39.9 cm
⚖️
Weight
1.3 kg
🗓️
Trimester
Third
⏱️
Week
30 of 40

🌱 Baby Development at Week 30

Baby's brain is developing grooves and ridges — increasing surface area dramatically. Lanugo (fine hair) begins to disappear. Baby's vision is developing — can detect light and dark. Bone marrow is fully producing blood cells.

Brain developing ridgesColostrum production beginsLanugo disappearing

🤱 Common Symptoms

Strong baby kicks and rolls
Braxton Hicks
Varicose veins
Edema (swelling)
Heartburn and reflux

🥗 Nutrition Tips

  • Vitamin K for blood clotting support
  • Fiber to manage constipation
  • Limit salt to reduce edema

🏃‍♀️ Exercise Tips

  • Compression stockings for varicose veins
  • Legs elevated when sitting
  • Gentle yoga or meditation

🏥 Medical Tests & Appointments

Routine prenatal visitMonitor for preeclampsia symptoms

🔬 Hormone Changes

Colostrum production in breasts begins. Prolactin levels start rising.

📖 Week 30 Pregnancy — In-Depth Guide

Your 30 week belly is doing much more, so you may want to get used to a comfortable sleeping position. Everywhere you go, you will probably receive great compliments so get used to them.

Your baby when you’re 30 weeks is growing larger about the size of zucchini at this time. You probably are way too excited as well given that you’ve got just 10 weeks to go give or take until you meet your little munchkin.

🩺30th Week Pregnancy Symptoms

When you’re 30 weeks pregnant, you will most likely be having weird dreams—that’s if you actually manage to get some sleep. This could most likely be caused by hormones, but could also be because you’re highly anxious.

A great idea would be to take a drive down to the hospital where you plan on having your baby, which will help you stop having nightmares of giving birth in your car. That said, here are a few symptoms you may experience when you’re 30 weeks pregnant.

Trouble sleeping

The biggest reason why you’re tossing and turning is because you’re uncomfortable. It may also be caused due to anxiety, which can lead to fatigue.

Heartburn

This is mostly caused by certain foods you eat such as greasy, spicy, heavy or acidic foods. Your best bet is to avoid them as much as possible especially before bedtime.

Swelling

During your 30th week of pregnancy, you can expect a little swelling to crop up on different areas of your body. However, if the swelling does get a bit severe, it may be sign of a major issue so get in touch with your doctor immediately.

Shortness of breath

You may feel the need to catch your breath at times, which is caused by your overcrowded lungs. Your baby when you’re at 30 weeks is resting well near your rib cage, but should drop down a little later during your pregnancy.

🤰Inside your Belly in Week 30

When you’re 30 weeks pregnant, the first thing you can’t help but notice your belly getting heavy and bigger.

Furthermore, you may also experience Braxton Hicks contractions often, which tend to occur after sex or exercise and even when you’re tired and dehydrated.

If the contractions are constant, you may want to get in touch with your doctor as it may be a sign off preterm labor.

By the time you reach week 30 , your weight gain should be between 18 and 25 pounds and 25 to 40 pounds if you’re pregnant with twins. In terms of fundal height, it should be between 28 to 32 centimeters.

But weight gain is the last thing you should be worrying about, because you will lose the extra pounds as soon as you start breastfeeding. Remember, it’s taken you nine months to put on this weight so it goes without saying that it will take time to wear off.

However, if you notice any sudden or drastic weight gain, it is good idea to inform your doctor as it may be a sign of preeclampsia—a serious pregnancy complication.

When you’re 30 weeks pregnant, your baby’s head is facing up and is resting in approximately 1½ pints of amniotic fluid.

Even though you may feel that your baby is cramped up in there, he or she has still room to move around.

Brace yourself because your belly is going to get much bigger in the upcoming weeks.

📷30th Week Pregnant Ultrasound - What to Expect ?

If you have a normal pregnancy, great chances are that you will not have a 30 week ultrasound.

But if you were to get take a peek, you would see that your baby’s brain is getting wrinklier owing to the fast growth of brain tissue.

If you’re pregnant with twins, your OB may ask for a biophysical profile, which is basically a combination of a 30-week ultrasound and a non-stress test (NST).

The NST test entails sensors placed on your belly to detect and measure contractions and heart rates of your twin babies. It will help your doctor gauge how your baby’s heart rate responds when they are moving.

If there are no complications with the biophysical profile, your OB will rule out any fetal distress to assure that your babies are doing just great.

👶Your Baby's Development in Week 30

Your baby’s face at week 30 looks similar to when they will be born. They do however need to bulk up a bit to get all their characteristics, but they are able to move their head and open their eyes.

In addition, your baby’s brain is also growing at an accelerated pace, and the lanugo (soft hair) will slowly start to disappear.

Another big baby development when you’re 30 weeks is their bone marrow, which has now completely taken over the production of the red blood cells.

Pregnancy Week 30 Checklist

Practice a hospital run
Schedule your week 32 prenatal visit
📅 Track Your Pregnancy:Due Date CalculatorSymptoms by WeekTrimester Guide← Week 29Week 31

Frequently Asked Questions

Common questions answered by our medical team

At 30 weeks, your baby is approximately the size of a Cabbage (🥬). Baby's brain is developing grooves and ridges — increasing surface area dramatically. Lanugo (fine hair) begins to disappear. Baby's vision is developing — can detect light and dark. Bone marrow is fully producing blood cells.

← Week 29Calculate Your Due DateWeek 31

🔗 Related Third Trimester Resources

Second Trimester
Weeks 14–27 guide
Trimesters Explained
Guide to all three trimesters
Symptoms Week by Week
What to expect each week
How Many Weeks Pregnant Am I?
Calculate your pregnancy weeks

All Pregnancy Weeks

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