Trimester 1
Week 13
About the size of
a pea pod
~7.4 cm~23 g
Averages only: a scan is the only way to know your baby’s size.
Your baby this week
Vocal cords form and the baby begins producing urine, swallowing amniotic fluid and passing it back.
What you may feel
The last week of the first trimester. Energy usually starts returning and nausea fading.
This week, try
Start applying moisturiser to your belly and hips. It will not prevent stretch marks, but it eases the itch of stretching skin.
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.