40 Weeks Pregnant
Your baby is the size of a Watermelon 🍉
🌱 Baby Development at Week 40
Your baby is fully developed and simply adding final fat and brain growth while awaiting labor. The placenta continues to nourish your baby, though providers monitor its efficiency more closely past the due date.
🤱 Common Symptoms
🥗 Nutrition Tips
- Light snacks for labor energy
- Honey and banana for energy
- Hydrate during early labor
🏃♀️ Exercise Tips
- Walking during early labor
- Warm bath for pain relief
- Hip circles on birth ball
🏥 Medical Tests & Appointments
🔬 Hormone Changes
Oxytocin and prostaglandins build toward the threshold that starts labor, which is why due-date timing varies so much. Stress hormones like adrenaline can temporarily stall early labor — rest and calm genuinely help.
📖 Week 40 Pregnancy — In-Depth Guide
Congratulations — you have reached your due date! At week 40, your baby is about the size of a small watermelon, roughly 20 inches long and around 7.6 pounds, though healthy birth weights vary widely. Here is the reassuring truth: only about 1 in 20 babies arrives exactly on the due date, so if labor hasn’t started, you are in excellent company. Your baby is fully developed, the placenta is still doing its job, and your provider will now monitor you more closely to make sure everything stays on track. This week is often an emotional mix of excitement, impatience, and well-meaning pressure from everyone asking for updates. Try to rest, stay distracted with gentle activities, and trust the process — most babies arrive within two weeks of their due date.
👶Baby Development at Week 40
Your baby is fully developed and simply putting on finishing touches — a little more fat, continued brain growth, and ever-stronger lungs. The brain is developing at a pace that will continue well into childhood, forming the connections that will soon process the flood of new sensations: light, sound, touch, and your face.
The skull bones remain unfused with soft fontanelles, ready to mold during the journey through the birth canal. Your baby’s liver has stored iron and the body has stored glycogen — energy reserves that will help in the first days before feeding is fully established. The digestive system holds meconium, awaiting that first diaper change.
Your baby’s senses are primed for the outside world: the eyes can focus at feeding distance, the ears recognize your voice above all others, and the sense of smell will soon guide your baby to your breast. The grasp reflex is strong, the startle reflex is sharp, and your baby can turn toward familiar sounds.
The placenta continues to nourish your baby, though providers watch it more carefully now since its efficiency can decline past the due date. Amniotic fluid levels are monitored too, as they naturally decrease. Your baby is cozy but ready — and movements should remain consistent. Any decrease in movement at 40 weeks needs immediate evaluation, so keep counting kicks every day.
🩺Your Body: Common Symptoms at Week 40
▸ Impatience and Emotional Swings
Being “overdue” on the exact date can feel frustrating, especially with constant check-ins from others. It is okay to feel all of it — excitement, anxiety, tears, laughter.
▸ Disrupted Sleep
Discomfort, anticipation, and nighttime bathroom trips make deep sleep nearly impossible. Rest in whatever form you can get it.
▸ Swelling
Hands, feet, and ankles may be puffier than ever. Elevate, hydrate, and report sudden or severe swelling promptly.
▸ Braxton Hicks or Early Labor Signs
Contractions may come and go in stop-start patterns for days. True labor establishes a steady, intensifying rhythm — that is your cue.
▸ Pelvic Pressure and Aching
Your baby’s head pressing low can cause aching hips, lightning crotch, and difficulty walking. Warm baths and side-lying rest help.
▸ Increased Discharge
The mucus plug may come away in pieces, possibly with bloody show — a sign the cervix is changing, though labor timing still varies.
🏥Medical Tests & Checkups at Week 40
If you reach your due date without labor, your provider will likely increase monitoring. Expect your weekly visit plus discussions about non-stress tests (NSTs) — which track your baby’s heart rate with movement — and possibly a biophysical profile (an ultrasound scoring breathing, movement, tone, and fluid). These reassure everyone that your baby is thriving while you wait.
Your provider will also talk through the plan for going past 41 weeks: most will recommend induction by 41 to 42 weeks at the latest, since risks rise after that point. Cervical checks continue, and your provider may discuss membrane sweeping — a technique that can sometimes help nudge labor along. Ask about the induction process now so you feel prepared rather than surprised.
🥗Nutrition & Movement Tips
Eat normally and stay hydrated — labor is athletic work when it comes.
Keep meals light but regular to avoid energy crashes.
Gentle walks and curb walking are popular (if unproven) labor encouragers.
Try the birth ball, squats, and hip circles to stay limber.
Rest deliberately between activity — conserve energy.
Avoid unproven “natural induction” methods without asking your provider first.
✅Week 40 Checklist
📌When to Call Your Doctor
At your due date, stay vigilant but calm. Most babies arrive safely in the coming days — these are the signs that need prompt attention.
Decreased fetal movement or a change in your baby’s usual pattern.
Your water breaks — especially if fluid is green, brown, or foul-smelling.
Regular, intensifying contractions or heavy vaginal bleeding.
Severe headache, vision changes, upper abdominal pain, or sudden swelling.
Fever, chills, or constant severe pain.
Frequently Asked Questions
Common questions answered by our medical team