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Second Trimester

25 Weeks Pregnant

Your baby is the size of a Cauliflower 🥦

🥦
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
Cauliflower
📐
Length
34.6 cm
⚖️
Weight
660 g
🗓️
Trimester
Second
⏱️
Week
25 of 40

🌱 Baby Development at Week 25

Baby's star-shaped cells (astrocytes) are forming in the brain. Capillaries develop under the skin giving it a pinkish color. Lungs continue maturing. Baby responds to touch from outside the belly.

Brain astrocytes developingResponds to touch from outsideCapillaries giving skin color

🤱 Common Symptoms

Heartburn and indigestion
Possible hemorrhoids
Back pain
Leg cramps
Shortness of breath

🥗 Nutrition Tips

  • Calcium for bone development
  • Antacid-friendly foods like bananas and almonds
  • Small frequent meals for heartburn

🏃‍♀️ Exercise Tips

  • Cat-cow stretches for back pain
  • Avoid exercises that put pressure on belly
  • Birth ball exercises begin

🏥 Medical Tests & Appointments

Glucose challenge test if not done at week 24Routine blood pressure monitoring

🔬 Hormone Changes

Progesterone causes esophageal sphincter relaxation — worsening heartburn. Blood volume reaches 40% above normal.

📖 Week 25 Pregnancy — In-Depth Guide

At 25 weeks, you may feel a bit overwhelmed that your delivery date is nearing. This is obviously an exciting feeling as well, and what makes it even better is that most hospitals will allow you to pre-register for delivery. Pre-registering is a good option to help prevent standing around at the time of labor. Your baby when you’re 25 weeks is about the size of a cauliflower or an eggplant, so it definitely is making great strides in terms of growth.

🩺18th Week Pregnancy Symptoms

At week 25, you probably still have a surge in energy, but you may also be feeling weighed down mostly due to your growing baby. Here are a few symptoms you may experience when you’re at 25th week.

Frequent urination

You may feel the need to frequently urinate, which is caused by your baby crowding your bladder.

Trouble sleeping

There may be many reasons why you may have trouble sleeping, most notably because you’re getting nervous about your upcoming delivery or your big belly is getting in the way. The best solution is to try and experiment with different sleep positions until you find on that works well for you.

Constipation

Constipation - Pregnancy symptom

Exercising, even if it’s taking short walks each day can provide great relief from constipation and upset stomach. Other solutions include drinking plenty of water and eating fiber rich foods.

Hemorrhoids

These swollen varicose anal veins are common in the second half of your pregnancy. They are caused mainly by the added pressure applied by your growing baby on your digestive tract. The constipation of course won’t help much, so it is best to take care of your tummy issues first to get some relief from swelling and discomfort.

Heartburn

This again is caused by your baby putting pressure on your digestive tract. Most antacids are safe to take during pregnancy, but it is good idea to check with your doctor before doing so. Try and avoid greasy or spicy foods especially before bedtime.

Braxton Hicks contractions

Braxton Hicks contractions during pregnancy

This is one of those symptoms you’ve probably experienced in the previous weeks of pregnancy. Good news is that these contractions do not happen regularly, and generally go away if you switch sleeping positions.

Gas and bloating
Gas and bloating during pregnancy
This is caused due to your hormones slowing down digestion resulting in excess gas.

🤰Inside your Belly in Week 25

By Week 25 , you may have gained several pounds equating to approximately 15 to 18 lbs for one child and 25 to 40 lbs if you’re pregnant with twins. This weight gain may cause a surge in anxiety, and even though at times it may not be slow and steady, it is common for that number to spike up around this time owing mostly to your baby’s accelerated growth. Another reason for the increased weight gain starting week 25 is the high amount of water weight, which will not be the same each week and will fluctuate all through the remainder of your pregnancy.

So there’s no reason to sweat if you’ve gained a few extra pounds, but it is important to ensure that it is healthy weight gain coupled with regular exercise. However, if your doctor notices that your weight gain does pose one or more health issues, they will definitely guide you on the best ways to keep it in check. At week 25, fetal movement is more prominent, and you’re probably noticing a few patterns already such as your baby kicking when their awake and snoozing when they’re not.

📷25th Week Pregnant Ultrasound - What to Expect ?

Your 25 week fetus has a pretty good sense of directions such as up and down, and is not only gaining weight by each passing day, but also growing more hair too. Your doctor most likely will not ask for an ultrasound to be performed when you’re 25 weeks pregnant unless of course extra monitoring is required.

scan image at week 25

If you haven’t done so already, you will probably have your Glucose Screening test anytime between week 24 and week 28 of your pregnancy. This test checks for gestational diabetes, and entails drinking a sugary solution and having your blood drawn to see how your body is processing sugar.

👶Your Baby's Development in Week 25

As mentioned earlier, your baby when you’re 25 weeks pregnant is growing by leaps and bounds, and in terms of weight is approximately 1.46lbs and measures 13.62 inches and is as big as a cauliflower. Its lungs are developing rapidly just as the rest of the respiratory system so much so that their nostrils are open and they can breathe. But since there is no air in your belly, your baby is actually breathing amniotic fluid, but is getting ready for the real breathing process.

baby growth inside belly at week 25

By week 25, most of your baby’s reproductive organs are formed, where the testis in males have descended. Further, your baby’s skin is translucent and wrinkled, and is constantly wiggling their fingers and toes.

Pregnancy Week 18 Checklist

Try Kegel exercises to strengthen the pelvic floor muscles
If you’re experiencing sleeping issues, try out different sleeping positions and maybe switch up your pillows for ones that are more comfortable
Shop for new maternity clothes if you haven’t done so already
📅 Track Your Pregnancy:Due Date CalculatorSymptoms by WeekTrimester Guide← Week 24Week 26

Frequently Asked Questions

Common questions answered by our medical team

At 25 weeks, your baby is approximately the size of a Cauliflower (🥦). Baby's star-shaped cells (astrocytes) are forming in the brain. Capillaries develop under the skin giving it a pinkish color. Lungs continue maturing. Baby responds to touch from outside the belly.

← Week 24Calculate Your Due DateWeek 26

🔗 Related Second Trimester Resources

First Trimester
Weeks 1–13 guide
Third Trimester
Weeks 28–40 guide
Trimesters Explained
Guide to all three trimesters
Symptoms Week by Week
What to expect each week

All Pregnancy Weeks

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