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Pregnancy Guide/Second Trimester/Week 20

Week 20: Dad's Guide

Second Trimester • Baby is the size of a a hammer

Week 20 of 4050% there

👶 Baby Update

Size: A hammer

HALFWAY THERE! The anatomy scan this week checks all major organs, brain, spine, heart chambers, kidneys, and more. Baby is about 10 inches long and 10 ounces. If finding out sex, this is usually when.

💕 What She's Going Through

Belly button may start to pop out. Shortness of breath as uterus pushes up. Swelling in feet and ankles may begin. She may feel beautiful or huge — sometimes both in the same hour.

💪 What You Should Do This Week

  • BE AT THE ANATOMY SCAN. This is the most detailed ultrasound — they check everything
  • If finding out the sex, plan how to share (or keep) the news
  • Celebrate the halfway point — do something special together

🚫 Don't Say This

Are you sure there's only one in there?

Never, ever comment on the size of a pregnant woman. Ever. Just don't.

🛒 Gear Tip

If you now know the sex, you can start buying! But most gear is gender-neutral anyway. Focus on the essentials.

🧠 Dad Hack

Ask for extra ultrasound printouts — you'll want them for the baby book. Some offices offer 3D/4D images too.

Ready to gear up?

Our interactive checklist tracks everything you need.

Baby Gear Checklist →