All Pregnancy Weeks
Third TrimesterWeek 33 of 40

Pregnancy Week 33: The Immune Transfer

Updated

Your baby this week
About the size of a pineapple
~17.2 in · ~4.2 lb

Medical Disclaimer: Content is for informational purposes only and does not replace professional medical advice. Always consult your healthcare provider.

How your baby is growing this week

Pineapple size — 17.2 inches, 4.2 lbs. Receiving antibodies from mom's immune system through the placenta. Bones hardening everywhere except the skull (stays soft for delivery). Lungs almost mature.

What your partner is going through

Insomnia is brutal — can't get comfortable, baby is active at night, anxiety about delivery. Overheating from the metabolic furnace of growing a human. Core body temp runs 1-2 degrees higher.

What to focus on this week, dad

  • 01Pet Ops: arrange a dog/cat sitter or boarding plan for the hospital stay. Your neighbor or friend needs the key, knows the feeding schedule, and is on standby from Week 36 onward
  • 02Work handoff document: start writing it. Who covers your projects, where files live, key contacts, and deadlines. You need to be able to disappear for 2-4 weeks with zero notice
+1 more focus item in the full briefing for week 33 — Start free

Connect with your partner

Keep the house cool — 68-70 degrees. She is running hot 24/7. If you are cold, put on a sweatshirt. Do not touch the thermostat.

Source: ACOG

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