At 38 weeks, your baby is gaining fat and becoming chubbier. Expect more back pain, pelvic pressure, and sleep issues as your body prepares for labor. Stay hydrated and rest as needed.
9 mins read
Jan 8, 2025
Trimester 3
Quick guide:
What’s happening with the baby at 38 weeks pregnant?
How big is your baby at 38 weeks pregnant?
How is your belly at 38 weeks pregnant?
Common symptoms and how to manage them?
Frequently asked questions at 38 weeks pregnant
What’s happening with the baby at 38 weeks pregnant?
Baby’s nails
Your baby’s fingernails and toenails are now fully formed. Fingernails may even extend beyond their fingertips, so they might need their first trim shortly after birth.
Smooth skin and hair
Your baby’s skin is smooth and plump thanks to a healthy layer of fat underneath. Most of the fine hair (lanugo) that covered their body is gone, though they might still have some on their shoulders or arms. They could also have a full head of hair – or just a bit of peach fuzz!
Brain growth
Your baby’s brain is continuing to grow and develop rapidly. At birth, their brain will contain about 100 billion neurons, laying the foundation for their future learning and development.
Fat accumulation
Extra fat is accumulating around your baby’s shoulders, elbows, and knees, giving them that adorable round newborn look.
How big is your baby at 38 weeks pregnant?
At 38 weeks pregnant, your baby is about the size of a leek. They measure approximately 49.3 cm from head to toe and weigh around 3.23 kg. As they gain fat, their skin becomes smoother, and they’re getting chubbier in preparation for life outside the womb.
How is your belly at 38 weeks pregnant?
At 38 weeks pregnant, your belly is likely at its peak size, and you’re feeling the full effects of carrying a nearly full-term baby. Here’s what to expect:
Size and shape
Your belly might feel tight and heavy, stretched to its limit as your baby continues to grow.
If your baby has dropped lower into your pelvis, your belly may appear slightly lower than in previous weeks, giving your lungs more room to breathe but putting more pressure on your bladder and pelvis.
Sensations
Braxton Hicks contractions are common and may feel like a tightening or hardening of your belly. These “practice contractions” can help prepare your body for labor.
You might experience sharp, quick pains in your pelvis, known as lightning crotch, caused by your baby’s head pressing on nerves.
Skin changes
Stretch marks may become more noticeable as your belly stretches further.
Itchy or dry skin is common, and moisturizing can help soothe irritation.
Common symptoms and how to manage them?
1) Swollen ankles and feet
Your growing uterus puts pressure on veins, slowing blood flow and causing fluid retention in your ankles and feet.
How to manage: Elevate your feet whenever possible, avoid standing or sitting for long periods, and wear comfortable shoes or compression socks. Stay hydrated, as drinking water helps reduce swelling. Contact your provider if swelling is severe or sudden.
2) Trouble sleeping
At 38 weeks, it can be difficult to find a comfortable sleeping position, and frequent bathroom trips or anxiety about labor may keep you awake.
How to manage: Use pillows to support your belly and between your legs. Avoid large meals and screen time before bed. If you can’t sleep, try reading or listening to calming music until you feel drowsy.
3) Lightning crotch
Sudden, sharp pains in the pelvis or groin are common as your baby’s head presses on nerves.
How to manage: Change positions, wear a belly support band, and take breaks from standing or walking.
4) Vaginal discharge
Increased discharge, sometimes mixed with mucus or blood, may occur as labor approaches.
How to manage: Wear panty liners for comfort and hygiene. Contact your provider if the discharge has a strong odor, unusual color, or if you suspect your water has broken.
5) Heartburn
Your expanding uterus pushes against your stomach, causing acid reflux.
How to manage: Eat smaller, frequent meals, avoid spicy or fatty foods, and prop yourself up while sleeping. Talk to your doctor about safe antacid options if needed.
6) Back pain
The weight of your baby and loosening joints can cause lower back pain.
How to manage: Use a pregnancy support belt, practice good posture, and try gentle exercises like swimming or prenatal yoga. A warm bath or massage can also help relieve tension.
7) Nesting energy
You may feel bursts of energy and the urge to clean or prepare for your baby’s arrival.
How to manage: Use this energy to get things done but pace yourself to avoid overexertion. Take breaks and drink plenty of water.
Frequently asked questions at 38 weeks pregnant
Can I go into labor at 38 weeks?
Yes, labor can happen at any time now. Watch for signs like regular, strong contractions, your water breaking, or losing your mucus plug. However, it’s still normal for labor to begin closer to 40 weeks.
What does losing the mucus plug mean?
The mucus plug is a thick clump of mucus that blocked your cervix to protect your baby. Losing it is a sign your cervix is starting to thin and dilate, indicating labor is near, but it doesn’t always mean it’s imminent.
Why do I feel sharp pains in my pelvis?
The sudden, sharp pain you’re experiencing is likely lightning crotch, caused by your baby’s head pressing on nerves. It’s normal and harmless but can be uncomfortable. Shifting positions or wearing a belly band can help.
Is it normal to feel more discharge now?
Yes, increased discharge is common as your body prepares for labor. It’s usually white, creamy, or clear. Contact your provider if it’s green, yellow, foul-smelling, or accompanied by heavy bleeding.
Should I still feel baby movements?
Yes, even though space is tight, your baby should still move regularly. If you notice decreased movement (fewer than 10 movements in 2 hours), call your provider immediately.