Week 12  ·  First trimester

Week 12, gently.

A needle-felted wool a plum

Your baby is the size of

a plum

  • 5.4 cm long
  • 14 g

Your baby now has fingerprints — unique, already, before anyone has seen their face.

“Fingerprints, already, before anyone has held the hand.”

What’s happening inside

Fingerprints form this week — a pattern unique to this person that will be theirs for life. Reflexes emerge: the baby can curl fingers, squint, and move gently.

A warm watercolor illustration of a 12-week fetus

How you might feel

Your uterus is rising out of the pelvis and into the lower abdomen. You may be starting to show, especially if this is not your first pregnancy.

A warm watercolor illustration of week 12 of pregnancy