GUIDE
You're post-term — most providers strongly recommend delivery by 42 weeks.
At 42 weeks your baby is the size of a jackfruit, likely weighing 8 pounds or more. Your baby is fully developed and healthy, but the placenta is aging and amniotic fluid is decreasing. Most providers recommend induction by 42 weeks to ensure the safest outcome for you and your baby.
Be prepared from day one
Your baby is now the size of a jackfruit — likely weighing 8 pounds or more and measuring over 20 inches. At 42 weeks, your baby is fully developed. There's nothing more they need from the womb — the remaining concern is the womb environment itself.
Your baby's skin may look different from what you'd see at 39-40 weeks. Much of the vernix caseosa has been absorbed or shed, and without that protective coating, the skin may appear dry, cracked, or peeling — especially on the hands and feet. This is cosmetic and resolves quickly after birth with moisturizing. Your baby may also have longer fingernails and toenails and possibly more hair.
The main concern at 42 weeks is the placenta. The placenta has a functional lifespan, and while it continues to work for most pregnancies past 42 weeks, the efficiency can begin to decline. A less efficient placenta means potentially reduced oxygen and nutrient delivery to your baby. This is why monitoring is so important — non-stress tests can detect signs of placental insufficiency before it becomes a problem.
Amniotic fluid levels continue to decrease after 40 weeks. Less fluid means less cushioning for the umbilical cord, which increases the risk of cord compression during contractions. An amniotic fluid index (AFI) check is a quick ultrasound that measures the fluid pockets around your baby.
There's also an increased risk of meconium passage at 42 weeks. If your baby passes meconium into the amniotic fluid before or during delivery, there's a risk of meconium aspiration (breathing it into the lungs), which can cause respiratory problems. This is one reason why your care team monitors amniotic fluid color closely.
Despite these concerns, the absolute risk of serious complications at 42 weeks remains relatively low — but it's higher than at 39-41 weeks, which is why delivery is recommended.
At 42 weeks, you've been pregnant for two weeks past your due date. Physically and emotionally, this is the most challenging point of the entire pregnancy journey.
Your body has been in a state of readiness for weeks. Your cervix may have been slowly dilating and effacing, or it may still be relatively unchanged — both happen, and neither is a reflection of your body's capability. Some people have prodromal labor for days before real labor begins; others go from nothing to active labor quickly.
Signs of labor at this stage are the same as they've been: regular, progressive contractions that don't stop; water breaking; heavy bloody show; persistent lower back pain in waves. If labor does start spontaneously, review our guide on when to go to the hospital. At 42 weeks, though, you're more likely to be heading toward an induction than waiting for spontaneous labor.
If induction is scheduled, here's what you should know: the process is safe, well-studied, and routine. It may start with cervical ripening (prostaglandins or a Foley bulb) if your cervix isn't ready, followed by Pitocin to stimulate contractions and possibly artificial rupture of membranes (breaking your water). The entire process can take 12-24 hours or more, depending on your starting point. Epidural and other pain management options are available just as they would be in spontaneous labor.
Understanding the stages of labor will help you understand what's happening during induction. Knowing what a C-section entails is also wise, since induction slightly increases the likelihood of cesarean delivery (though the ARRIVE trial data suggests this may not be the case for all populations).
Emotionally, being 42 weeks pregnant can feel isolating. Most of the people you know who were pregnant at the same time have already had their babies. The waiting feels endless. It's okay to feel all of this — frustrated, scared, impatient, exhausted. These feelings don't make you a bad parent. They make you human.
Now is a good time to read up on postpartum recovery so you know what to expect once your baby is here. Understanding recovery helps you plan the support you'll need in those early weeks.
Your baby is coming. This is the final chapter of your pregnancy story, and it's ending soon.
Every pregnancy is different. You may experience all, some, or none of these symptoms.
This is the final stretch. Induction is likely imminent, and your baby will be in your arms very soon.
At 42 weeks, monitoring is essential. Your provider will perform non-stress tests (possibly twice weekly) and amniotic fluid checks to ensure your baby is thriving and the placenta is still functioning well. Don't skip these appointments — they're the best way to confirm that waiting is still safe.
If induction is scheduled, know the details: when to arrive, what to eat beforehand, what to bring, and what the process will look like. Ask about pain management options during induction — epidurals are available during induced labor just as they are during spontaneous labor. Understanding the timeline and stages helps you feel prepared rather than passive.
Induced labor, especially when starting from an unripe cervix, can take longer than spontaneous labor. Pack extra snacks, entertainment (books, music, podcasts), and comfort items. Have a support person who can stay with you for the duration. Mental preparation for a marathon (not a sprint) will serve you well.
Being 42 weeks pregnant is not where anyone wants to be. You may feel like your body has failed you or that you've done something wrong. Neither is true. Post-term pregnancy is common, it's not your fault, and it doesn't reflect anything about your body's ability to give birth or parent. Your baby is coming — this is the final stretch.
When in doubt, call your provider. At 42 weeks, even small changes warrant a call.
There is no week 43 in this guide series — because by 42 weeks, delivery is strongly recommended and your baby should be arriving very soon. Whether through spontaneous labor, induction, or cesarean delivery, you are about to meet the person you've been growing for over nine months.
Looking back at your journey from week 29 when your baby's bones were still soft and their brain was just beginning its rapid growth — to now, with a fully developed human being ready to take their first breath — the transformation is extraordinary. You grew a person. That's remarkable.
The next chapter is here. Welcome to parenthood.
This guide is for informational purposes only and is not a substitute for professional medical advice. Always consult your healthcare provider with any questions about your pregnancy.
