Week 36 of Pregnancy: Your Baby Is the Size of a Romaine

TL;DR

• Your baby is about 47.4 cm long — roughly the length of a head of romaine lettuce
• Your baby is getting into position for birth, ideally settling head-down
• You're in the home stretch — weekly provider visits may begin now
• Appointments may increase to weekly visits from here on out

Your Baby This Week

Your baby is getting into position for the big day. Most babies have turned head-down by now, settling into the pelvis in what's called the cephalic position — the ideal position for a vaginal delivery. You might feel increased pressure low in your pelvis and a notable shift in where you feel kicks (higher up, near your ribs, as those little feet point upward).

At 47.4 cm and about 5.8 pounds, your baby is nearly at their birth size. They'll continue to gain about half a pound per week for the remaining weeks, building up the fat stores that will keep them warm and nourished in those early days after birth.

Your baby's digestive system is ready to go. Their intestines contain meconium — a dark, sticky substance made up of everything your baby has ingested in the womb: amniotic fluid, mucus, bile, and shed skin cells. This will be your baby's first bowel movement, usually within the first day or two after birth. (Fair warning: it's impressively sticky.)

The vernix caseosa — that waxy, white coating that has been protecting your baby's skin from the amniotic fluid — is starting to shed. Some babies are born with patches of it still on their skin, especially in the creases of their arms and legs. It's perfectly natural and will be absorbed or gently wiped away.

Your Body This Week

Your provider may start seeing you weekly from this point forward. These appointments will typically include checking your blood pressure, measuring your fundal height, monitoring your baby's heart rate, and checking whether your cervix has started to dilate or efface (thin out). Some cervical changes are normal at this stage, while others may happen only when labor begins — there's a wide range of normal.

You might notice an increase in pelvic pressure and lower back pain as your baby settles deeper into your pelvis. The waddle is real, and you've earned it. Sitting on a birth ball, doing gentle pelvic rocks, and taking warm (not hot) baths can provide some relief.

Swelling may persist, and you might notice it getting worse as the day goes on. Continue elevating your feet and staying hydrated. If you experience sudden, severe swelling — especially in your face or hands — or if swelling is accompanied by headaches, vision changes, or upper abdominal pain, contact your provider immediately. These can be signs of preeclampsia, which requires prompt medical attention.

You might also experience some new or increased vaginal discharge, including what's called the mucus plug — a thick, sometimes blood-tinged discharge that indicates your cervix is beginning to change. Losing your mucus plug doesn't mean labor is imminent — it can happen days or even weeks before delivery. But it is a sign that your body is preparing.

Common Questions at Week 36

What if my baby is still breech?

If your baby hasn't turned head-down by 36 weeks, your provider may discuss an external cephalic version (ECV) — a procedure where they manually try to turn your baby by applying pressure to your abdomen. It's done in a hospital setting and has about a 50-60% success rate. Some babies also turn on their own even this late. If your baby remains breech, your provider will discuss delivery options, which may include a planned cesarean.

What does it mean when my cervix starts to dilate?

Cervical dilation is measured in centimeters, from 0 (closed) to 10 (fully dilated for delivery). Some people begin to dilate slowly weeks before labor, while others don't dilate until active labor begins. Being 1-2 cm dilated at a routine appointment doesn't mean you're going into labor tonight — it just means your body is gradually preparing. It's interesting information, but it's not a reliable predictor of when labor will start.

Should I be worried about decreased movement?

Your baby has less room to move, so the type of movement may change — but the frequency should remain consistent. Continue your daily kick counts. If you notice a significant decrease in movement or your baby doesn't seem to be moving at their usual times, drink something cold, lie on your side, and count. If you don't reach ten movements in two hours, call your provider.

When should I go to the hospital?

A general guideline is the 5-1-1 rule: contractions that are 5 minutes apart, lasting 1 minute each, for at least 1 hour. You should also go if your water breaks, you have heavy bleeding, or you feel something is wrong. When in doubt, call your provider — they'd rather hear from you unnecessarily than have you wait too long.

This Week's Tip

Your appointments may increase to weekly visits from here on out. These frequent check-ins are an important part of monitoring both your health and your baby's as you approach delivery. Use these appointments to ask any lingering questions — about labor signs, when to go to the hospital, what to expect during delivery, and postpartum recovery. Write your questions down beforehand so you don't forget them in the moment. Your care team has seen it all, and no question is too small or too silly.

Milestone: Head Down

Your baby has likely turned head-down, settling into the position they'll be in for birth. This is called the cephalic presentation, and about 97% of babies are in this position by the time labor begins. Feeling your baby's head low in your pelvis — with those kicks now aimed at your ribs — is a tangible reminder that birth is approaching. Your baby is getting ready. And so are you.

Sources

• American College of Obstetricians and Gynecologists (ACOG) — Third Trimester
• Mayo Clinic — Fetal Development: The Third Trimester

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