What to Expect During the Third Trimester

By the time you reach the third trimester, the finish line is finally in sight. In just a matter of weeks, you’ll meet your baby, a moment you’ve been waiting for throughout your entire pregnancy.

At the same time, this final stage (weeks 28–40) can be physically and emotionally challenging. As your baby grows rapidly, your body continues to adjust, often bringing new symptoms and more frequent prenatal visits.

Understanding what’s normal, and how to manage it, can help you feel more prepared and confident as you approach delivery.

How Your Body Changes in the Third Trimester

During the third trimester, your baby is growing quickly and gaining weight, which means your body is working harder than ever.

You may notice:

• Increased belly size and pressure
• Back pain and muscle aches
• Swelling in the feet, ankles, and hands
• Frequent urination
• Shortness of breath as your uterus expands
• Heartburn or indigestion
• Difficulty finding a comfortable sleeping position

These symptoms are common and typically a normal part of late pregnancy—but they can still be uncomfortable.

Managing Common Third Trimester Symptoms

Here are a few ways to ease discomfort:

• Rest when needed and avoid overexertion
• Elevate your feet to help reduce swelling
• Sleep on your side (preferably the left side) for better circulation
• Wear supportive shoes and consider a maternity support belt
• Eat smaller meals to reduce heartburn
• Stay hydrated throughout the day

Listening to your body is key—this is a time to slow down and prioritize self-care.

Understanding Braxton Hicks Contractions

Many women begin to notice Braxton Hicks contractions during the third trimester.

These are often described as:

• Mild tightening or hardening of the abdomen
• Irregular and usually painless
• More noticeable after activity or dehydration

Think of them as your body’s way of “practicing” for labor.

How to Tell They’re Not Labor:

• They don’t become regular or closer together
• They often go away with rest or hydration

If you experience frequent or painful contractions, it’s always best to contact your healthcare provider.

Weight Gain in the Final Weeks

It’s normal to gain the most weight during the third trimester as your baby continues to grow.

• Average weight gain is about 1 pound per week
• Total pregnancy weight gain typically ranges from 25–35 pounds, depending on your starting point

Your provider will monitor your weight and help ensure it’s within a healthy range for you and your baby.

Breast Changes and Colostrum

As your body prepares for breastfeeding, you may notice colostrum leakage from your breasts.

• Colostrum is the first form of breast milk
• It’s rich in nutrients and antibodies
• Leakage is completely normal and may occur in the weeks leading up to delivery

You can use nursing pads if needed for comfort.

More Frequent Prenatal Visits

As your due date approaches, your prenatal care schedule becomes more frequent:

• Every 2 weeks during early third trimester
• Weekly visits during the final month

At these appointments, your provider will:

• Monitor your baby’s growth and position
• Check your blood pressure and overall health
• Watch for signs of labor
• Answer any last-minute questions

Preparing for Baby’s Arrival

The third trimester is also the perfect time to get ready for your baby.

Consider:

• Packing your hospital bag
• Installing your car seat
• Finalizing your birth plan (if you have one)
• Setting up your baby’s sleeping area
• Attending childbirth or parenting classes

Preparation can help reduce stress and make you feel more in control as your due date approaches.

When to Call Your Doctor

While many symptoms are normal, contact your provider if you experience:

• Regular, painful contractions
• Vaginal bleeding
• Sudden or severe swelling
• Severe headaches or vision changes
• Decreased baby movement
• Leakage of fluid (possible water breaking)

It’s always better to check in if something doesn’t feel right.