34 Weeks Pregnant

At a Glance

You're in the third trimester, with just six weeks (or fewer) until your due date. This week your baby is roughly the size of a cantaloupe — about 17.7 inches (45 cm) long from head to heel and weighing approximately 4.7 pounds (2.1 kg). The headline milestone this week: your baby's central nervous system and lungs are maturing rapidly, and most babies born now have very strong chances of healthy outcomes with minimal or no NICU support. The fine, downy hair (lanugo) covering your baby's body is starting to disappear, and the protective waxy vernix is thickening in preparation for birth.

Your Baby's Development This Week

At 34 weeks, fetal development is focused on fine-tuning systems already in place rather than building new ones. Here's what's happening anatomically:

• Lungs: Your baby's lungs are nearly fully developed and producing surfactant — a substance that prevents the air sacs from collapsing with each breath. Babies born this week typically breathe on their own, though some may need brief respiratory support.
• Central nervous system: The brain is maturing rapidly. Brain weight increases substantially in the third trimester, and the protective fatty myelin sheath around nerves continues to form, supporting better signal transmission.
• Eyes: Your baby can now see light filtering through your abdominal wall and is practicing focusing, blinking, and pupil dilation. The irises can constrict and dilate in response to light.
• Skin: No longer translucent, the skin is now smoother and pinker as fat continues to accumulate underneath. Fingernails have reached or passed the fingertips.
• Bones: Bones are hardening (ossifying), with the exception of the skull, which remains soft and flexible to allow passage through the birth canal.
• Immune system: Your baby is absorbing antibodies from your bloodstream through the placenta, building passive immunity that will protect them in the first months after birth.
• Position: Most babies have settled into a head-down (vertex) position by now, though some will still turn in the coming weeks.

Your Body and Symptoms This Week

At 34 weeks, your uterus has reached its highest point (about 5.5 inches above your belly button), and you may be experiencing the full range of late third-trimester symptoms:

• Braxton Hicks contractions: Irregular practice contractions are common now. They should be painless and stop with movement or rest.
• Fatigue: Carrying a near-full-term baby is exhausting. Combined with broken sleep, fatigue may rival first-trimester levels.
• Swelling (edema): Mild swelling of feet, ankles, and hands is normal. Sudden, severe, or asymmetric swelling — especially of the face — can signal preeclampsia and needs prompt evaluation.
• Shortness of breath: Your uterus is pressing on your diaphragm. This will ease when your baby drops.
• Frequent urination: Returns or worsens as the baby's head presses on your bladder.
• Heartburn and indigestion: Often worse now due to upward pressure on the stomach.
• Back pain and pelvic pressure: Loosening pelvic ligaments (driven by the hormone relaxin) and the baby's weight cause aching.
• Leaky breasts: Some women begin leaking colostrum (the first milk) this week or in coming weeks.
• Itchy skin: Stretching skin is itchy; severe itching, especially on palms and soles, can signal cholestasis of pregnancy and needs evaluation.

Nutrition: What to Eat & Avoid This Week

In the third trimester, your nutritional priorities shift toward supporting rapid brain growth, building iron stores for both you and your baby, and maintaining stable energy. ACOG recommends an additional 450 calories per day in the third trimester.

Focus on:

• Iron-rich foods: Lean red meat, poultry, lentils, fortified cereals, spinach. Iron needs peak in the third trimester (27 mg/day) to support increased blood volume and prevent anemia.
• Calcium: 1,000 mg daily — dairy, fortified plant milks, leafy greens, tofu. Supports your baby's hardening bones.
• DHA (omega-3): Critical for brain development. Low-mercury fish (salmon, sardines), walnuts, flaxseed, or prenatal DHA supplements.
• Protein: 70–100 g daily for tissue growth.
• Fiber and fluids: Helps with constipation and hemorrhoids, both common now.

Continue avoiding: raw or undercooked meat/seafood, deli meats (unless heated), unpasteurized dairy, high-mercury fish (shark, swordfish, king mackerel, tilefish), raw eggs, alcohol, and excess caffeine (under 200 mg/day per ACOG).

Movement & Exercise

ACOG recommends at least 150 minutes of moderate-intensity activity per week throughout pregnancy in uncomplicated cases. At 34 weeks, you'll want to choose lower-impact activities and listen carefully to your body.

Safe options this week: walking, prenatal yoga, swimming or water aerobics (excellent for taking weight off joints), stationary cycling, prenatal Pilates, pelvic floor exercises (Kegels), and gentle stretching.

Avoid: contact sports, activities with high fall risk (skiing, horseback riding), hot yoga or hot tubs (overheating risk), lying flat on your back for long periods (compresses major vessels), and any activity that causes pain, dizziness, or shortness of breath.

Stop and contact your provider if you experience vaginal bleeding, fluid leaking, regular contractions, chest pain, dizziness, calf pain or swelling, or decreased fetal movement.

Mental & Emotional Wellbeing

As your due date approaches, it's normal to feel a mix of excitement, anxiety, impatience, and apprehension. Anxiety about labor, the health of your baby, postpartum recovery, and life with a newborn often peaks now. Sleep disruptions (heartburn, hip pain, vivid dreams, frequent urination) can amplify mood swings.

What helps:

• Sharing fears with your partner, midwife, or a friend who's been through pregnancy
• Taking a childbirth education class if you haven't already
• Practicing relaxation techniques: deep breathing, prenatal yoga, guided meditation
• Limiting "what if" internet searches that fuel anxiety
• Asking your partner for specific support — back massages, taking over household tasks, attending appointments with you
• Naming and accepting mixed feelings — ambivalence about huge life changes is normal

If sadness, hopelessness, panic, or intrusive thoughts persist for more than two weeks, talk to your provider — antenatal depression and anxiety are common and treatable.

Common Concerns & When to Call Your Doctor

At 34 weeks, you're approaching term but not yet there. Call your provider or go to labor and delivery immediately if you experience any of these:

• Decreased fetal movement — fewer than 10 movements in 2 hours during baby's active time
• Signs of preterm labor: regular contractions (more than 4 per hour), low back pain that comes and goes, pelvic pressure, watery vaginal discharge
• Vaginal bleeding or fluid leaking (could be amniotic fluid)
• Signs of preeclampsia: severe headache, vision changes (blurring, spots, flashing), upper right abdominal pain, sudden swelling of face/hands, sudden weight gain
• Severe itching, especially of palms and soles (possible cholestasis of pregnancy)
• Persistent vomiting or inability to keep fluids down
• Fever above 100.4°F (38°C)
• Burning or pain with urination (possible UTI)

Tests & Appointments This Week

Around 34 weeks, prenatal visits typically increase to every two weeks. Your appointment may include:

• Blood pressure and weight check
• Urine test (protein, glucose, signs of infection)
• Fundal height measurement
• Fetal heart rate check
• Discussion of fetal position and movement patterns
• Review of preterm labor warning signs

Your provider will plan for Group B Strep (GBS) testing at your 36-week visit. If you have risk factors for preterm birth or other complications, a third-trimester ultrasound may also be ordered. Use this visit to ask about your birth plan, who to call when labor starts, and when to go to the hospital.

Tips for Week 34

• Pack your hospital bag this week. Include essentials for you, your partner, and baby. Keep it by the door.
• Install the car seat now. Have it checked by a certified Child Passenger Safety Technician — many fire stations offer free checks.
• Do daily kick counts. Pick a consistent time when baby is usually active. Document any concerns.
• Finalize who to call when labor starts — provider, hospital, partner, support person, childcare for older kids.
• Stock the freezer. A few easy reheatable meals make the early postpartum weeks much easier.

Preparing for What's Next

The next two weeks are about logistics and rest. By week 36, you'll have a GBS test, and many providers will start checking your cervix. Use this week to confirm your pediatrician choice (if you haven't already), tour the hospital if possible, and finalize your support plan for the early postpartum weeks. If you're planning to breastfeed, this is a great time to take a breastfeeding class or read about latch and positioning. Sleep as much as you can — once labor starts, rest becomes scarce.

Frequently Asked Questions About Week 34