DadChoice
Pregnancy Guide/First Trimester/Week 1

Week 1: Dad's Guide

First Trimester • Baby is the size of a a grain of sand

Week 1 of 403% there

👶 Baby Update

Size: A grain of sand

Technically, pregnancy is counted from the first day of her last period — so this week, there's no baby yet. Her body is preparing to ovulate. The countdown has started.

💕 What She's Going Through

Nothing yet — she probably doesn't even know she's pregnant (because she isn't, technically). Her body is shedding the uterine lining and preparing a fresh one.

💪 What You Should Do This Week

  • If you're trying to conceive, make sure she's taking prenatal vitamins with folic acid
  • Cut back on alcohol and caffeine together — solidarity matters
  • Start tracking her cycle if you haven't already (apps: Flo, Clue, or Ovia)

🚫 Don't Say This

Are you pregnant yet?

Patience. Pressuring makes it stressful. Let it happen.

🧠 Dad Hack

Download a fertility tracking app on YOUR phone too. Being involved from day zero sets the tone.

Ready to gear up?

Our interactive checklist tracks everything you need.

Baby Gear Checklist →