Week 37: Early Term
The baby is considered early term — delivery could be any day now
Week 37 marks 'early term' — meaning the baby's organs are mature enough for life outside the womb. If labor started today, your OB would let it progress. The baby is essentially done cooking, just adding final weight and lung surfactant. From here on, every day is borrowed time. Stay ready.
What's happening this week
The baby weighs about 6.3 pounds. The lungs are fully mature. The brain and nervous system are continuing to refine connections. The baby practices breathing, sucking, gripping, and blinking. The baby has settled deep into the pelvis. She may experience the 'nesting instinct' — a sudden urge to clean and organize everything.
Your checklist
0 of 5 completeKeep your phone charged and on. Don't go far from home without a plan to get back quickly. Have the hospital bag in the car or by the front door. Know who to call if labor starts when you're at work.
If she wants to deep-clean the bathroom at 11pm, just go with it. Nesting is a real hormonal drive. Help where you can, but also make sure she's resting. She'll need energy for labor.
Regular contractions (5-1-1 rule), water breaking, bloody show. Know the OB's after-hours number by heart. Know whether to call or go straight to the hospital for different scenarios. If her water breaks, go to the hospital regardless of contractions.
If you have other children, confirm their care plan for when you go to the hospital. If you have pets, arrange feeding and walks. These are easy to forget in the moment.
This is the final stretch of life before parenthood. Take a walk together. Watch a movie. Sleep in while you still can. These moments are more precious than they feel right now.
Recommended products
Muslin Swaddle Blankets — Aden + Anais
Classic muslin swaddle blankets, breathable and soft. Multi-use: swaddling, nursing cover, burp cloth, stroller shade, tummy time blanket. Pre-washed for softness. Pack of 4 in neutral prints.
At 37 weeks, the baby is classified as 'early term' by ACOG (American College of Obstetricians and Gynecologists). This means the baby's major organ systems are mature enough for independent life, though 39 weeks is still considered ideal for elective deliveries. The distinction matters because babies born at 37–38 weeks have slightly higher rates of breathing difficulty, feeding challenges, and NICU admission compared to those born at 39+ weeks.
For dads, week 37 marks the transition from 'getting ready' to 'being ready.' The hospital bag should be packed. The car seat should be installed. The work coverage plan should be in place. The pediatrician should be selected. From this point forward, labor could begin at any time, and your job is to be ready to go at a moment's notice.
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