The third trimester, from weeks 29 to 40, is the final stretch of pregnancy—and it’s often filled with anticipation, excitement, and physical changes. As your baby prepares for birth, your body is also getting ready for labor and delivery. At Tidewater Physicians for Women in Virginia Beach and Norfolk, VA, we’re here to support you with compassionate, expert care every step of the way. Here’s what to expect during the third trimester of pregnancy.
What Physical Changes Happen in the Third Trimester?
Your baby is growing rapidly, and so are the demands on your body. Common third trimester symptoms include:
- Shortness of breath: As your uterus presses upward, your lungs have less room to expand.
- Frequent urination: Your baby’s head may be pressing on your bladder.
- Swelling (edema): Mild swelling in your feet and ankles is normal, but sudden or severe swelling should be evaluated.
- Braxton Hicks contractions: These “practice” contractions may feel like mild tightening in your belly.
- Backaches and pelvic pressure: Your joints are loosening, and your posture is shifting.
- Leaky breasts: Colostrum, your first form of breast milk, may begin to leak.
- Sleep difficulties: Discomfort, leg cramps, or frequent bathroom trips can disrupt rest.
- Heartburn: Hormonal changes and your growing uterus can contribute to reflux.
Key Tests and Appointments
The third trimester includes more frequent check-ins with your OB/GYN and important preparations:
- Prenatal visits every two weeks starting around 28 weeks, then weekly after 36 weeks.
- Group B strep test between 36–37 weeks to check for bacteria that can affect your baby during delivery.
- Cervical checks near the end of pregnancy to assess dilation and effacement.
- Non-stress tests or ultrasounds, if needed, to monitor your baby’s well-being.
Baby’s Development in the Third Trimester
- Your baby gains most of their weight in the final weeks.
- Lungs, brain, and organs continue to mature.
- Around 34–36 weeks, most babies turn head-down in preparation for birth.
- You may feel stronger, more frequent kicks—and eventually, rolling or shifting movements as space gets tight.
How to Prepare for Labor and Delivery
Now is the time to finalize your plans and gather your support:
- Create or review your birth plan and share it with your provider.
- Pack your hospital bag with essentials for you, your partner, and your baby.
- Take a childbirth class or refresh your knowledge on labor stages and coping techniques.
- Install your car seat and ensure it’s properly fitted before your due date.
- Pre-register with your hospital and complete any needed paperwork.
When to Call Your OB/GYN
Be sure to contact your provider right away if you experience:
- Vaginal bleeding
- Leaking fluid or a sudden gush (possible water breaking)
- Regular, painful contractions that don’t go away with rest
- Decreased fetal movement
- Signs of preeclampsia (severe headache, vision changes, upper abdominal pain, swelling in hands or face)
Here for You Until the Big Day (and Beyond)
At Tidewater Physicians for Women, we provide expert care tailored to your pregnancy journey. As you enter the final trimester, we’re here to monitor your health, answer your questions, and prepare you for a safe and empowering birth experience.
To schedule your third trimester appointment or learn more, visit Tidewater Physicians for Women in Virginia Beach and Norfolk, VA
Further Reading
What to Expect- The Third Trimester
