Pregnancy Week 4: The Positive Test

Your baby this week

About the size of a poppy seed

~0.04 in · ~<0.01

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

Poppy seed size — 0.04 inches. Implantation complete. Neural tube forming, which becomes brain and spinal cord. Cells dividing at roughly 1 million per second.

What your partner is going through

Missed period confirmed. hCG doubling every 48 hours — causing fatigue, breast tenderness, and possible nausea. Emotional whiplash between excitement and terror is standard.

What to focus on this week, dad

01Start the Protocol folder — one shared Google Drive or Notion with insurance cards, OB contact, pharmacy, and emergency contacts
02Calculate due date (last period + 280 days) and count backward to build your leave timeline

+1 more focus item in the full briefing for week 4 — Start free

Connect with your partner

Do not pressure her to feel happy immediately. Fear, ambivalence, and overwhelm are all normal first reactions. Match her energy — if she needs to process quietly, sit with her.

Source: Mayo Clinic

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