39 Weeks Pregnant: What to Expect

You’re at 39 weeks pregnant—almost there! At this point, your baby is considered full-term and could arrive any day. Here’s a guide to help you understand what’s happening with your body and your baby as you prepare for labor.

Your Baby’s Development

At 39 weeks, your baby:

• Weighs approximately 7-8 pounds and is about 19-21 inches long.
• Continues to gain fat, which helps regulate body temperature after birth.
• Has fully developed organs, including the lungs, which are now ready for breathing.
• Might be moving less as space becomes limited. However, you should still feel consistent movement​.

Your Body at 39 Weeks

Your body is preparing for labor, and you may experience:

• Braxton Hicks contractions: These practice contractions help tone your uterus for delivery.
• Increased pressure in the pelvis: As your baby “drops,” you might feel more pressure or discomfort.
• Mucus plug or “bloody show”: A sign your cervix is preparing for labor.
• Water breaking: This happens when the amniotic sac ruptures, signaling labor may begin soon.

If you experience regular, painful contractions or your water breaks, it’s time to head to the hospital​.

Signs of Labor

Be on the lookout for these common signs of labor:

1. Regular contractions: Contractions that are consistently 5-10 minutes apart and increase in intensity.
2. Water breaking: A sudden gush or slow leak of amniotic fluid.
3. Back pain: Persistent lower back pain that doesn’t improve with movement.
4. Cervical changes: Your cervix begins to dilate and efface, often checked by your healthcare provider.

If you’re unsure whether you’re in labor, contact your doctor or midwife to be safe.

What to Do This Week

• Finalize your hospital bag: Include essentials like ID, clothes, snacks, and comfort items.
• Practice relaxation techniques: Breathing exercises, visualization, or yoga can help you stay calm.
• Stay hydrated and eat light meals: Small, nutritious snacks can give you energy as labor approaches.
• Monitor your baby’s movements: Kick counts are essential to ensure your baby remains active and healthy.

When to Call Your Doctor

Call your healthcare provider if you experience:

• Severe headaches or vision changes
• Heavy vaginal bleeding
• Decreased fetal movement
• Sudden swelling of the hands, face, or feet (a sign of preeclampsia)

At 39 weeks pregnant, you’re in the final stretch! While you might be feeling anxious or uncomfortable, your baby is ready to meet you soon. Keep an eye on labor signs, take care of yourself, and lean on your support system. You’ve got this!