What to Expect at 25 Weeks Pregnant: Your Baby and Body This Week

Congratulations—you’re 25 weeks pregnant! You’re well into your second trimester, and both you and your baby are experiencing incredible changes. This week is all about continued growth, preparation for the third trimester, and enjoying those baby kicks. Here’s what to expect at 25 weeks.

Your Baby at 25 Weeks

• Size and Weight: Your baby is about the size of a rutabaga, weighing around 1.5 pounds and measuring approximately 13.5 inches long.
• Skin Development: The skin is still thin but gradually filling out as fat layers develop underneath.
• Brain Growth: Your baby’s brain is forming complex connections, and brain tissue is expanding.
• Lung Maturity: Tiny air sacs, or alveoli, are forming in the lungs, although they won’t be ready for independent breathing until closer to birth.
• Hearing: Your baby can now recognize familiar sounds, like your voice or your partner’s.
• Movements: You’re likely feeling more defined kicks and rolls as your baby grows stronger.

Your Body at 25 Weeks

As your baby grows, so does your belly—and with it come some new experiences and challenges.

Physical Changes

• Growing Belly: Your uterus is now the size of a soccer ball, sitting about halfway between your belly button and rib cage.
• Weight Gain: Many women have gained around 15–18 pounds by this point.
• Braxton Hicks Contractions: You may notice mild, irregular uterine contractions as your body prepares for labor.
• Swelling: Mild swelling in the ankles, feet, or hands is normal due to fluid retention.

• Back Pain: Your growing bump shifts your posture, which can strain your back.
• Heartburn: Hormones relax the valve between your stomach and esophagus, causing discomfort.
• Frequent Urination: Your baby’s position and growing size can press on your bladder.
• Fatigue: Energy levels might dip as your body continues to support your baby’s rapid development.

Tips for a Healthy 25th Week

1. Stay Active:
• Gentle exercises like walking, swimming, or prenatal yoga can relieve aches and boost energy.
2. Hydrate and Eat Well:
• Focus on foods rich in iron, calcium, and protein to support your baby’s growth. Stay hydrated to combat swelling and fatigue.
3. Track Baby’s Movements:
• By now, you may notice your baby has active and quiet periods. Note any significant changes in movement patterns and share concerns with your doctor.
4. Prepare for Glucose Testing:
• Your healthcare provider may schedule a glucose screening soon to test for gestational diabetes.
5. Address Discomfort:
• Use a pregnancy pillow for better sleep and support your lower back with a cushion when sitting.

When to Call Your Doctor

• Severe swelling, especially in your face or hands
• Blurred vision, severe headaches, or sudden weight gain (potential signs of preeclampsia)
• Painful or regular contractions
• Noticeable decrease in your baby’s movements

Looking Ahead

With just 15 weeks to go, you’re getting closer to meeting your baby! Now is a great time to start thinking about your birth plan, prenatal classes, and baby essentials. Take each day as it comes, and savor these precious moments of pregnancy.

Content Reviewed by Dr V.

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Dr. Vaheh Shirvanian, a family medicine physician and father. With over 17 years of experience, he specializes in inpatient acute hospital care, outpatient family medicine, urgent care, emergency medicine, and hospice care. Dr. V is passionate about guiding new parents through the challenges and joys of parenthood, offering compassionate and expert support at every step.