Trimester 1
Week 12
About the size of
a lime
~5.4 cm~14 g
Averages only: a scan is the only way to know your baby’s size.
Your baby this week
Reflexes are developing: the baby will curl their fingers and toes and may respond to pressure on the abdomen.
What you may feel
Miscarriage risk drops substantially from this point. Many people choose to share the news around now.
This week, try
If you plan to tell your employer, this is a common time. Check your local maternity leave notice requirements.
Weeks are counted from the first day of your last period, as your care team counts them. Written by The Childhood Journal’s team from standard prenatal references. Not yet reviewed by a clinician: our scientific board is being formed. General information, never an assessment of your pregnancy.