First trimesterWeek 5 of 40
Your baby at 5 weeks pregnant
Your baby is the size of a apple seed — about 0.1 in long and weighing approximately <0.1 oz.
🍎
Apple seed
The size of a apple seed
Length (crown to heel)
0.1 in
Approximate weight
<0.1 oz
Baby's hand
3mm
Baby's foot
3mm
Pregnancy progress3%
🌱 Baby's development at 5 weeks
The neural tube — which will become the brain and spine — is forming this week.
🤰 Your body at 5 weeks
Breast tenderness, mild cramping, and fatigue are common. Some women experience light spotting called implantation bleeding — don't panic, it's normal.
✨ Did you know?
The embryo is growing by about 1 million new cells per minute at this stage. Development is happening at a genuinely astonishing pace.
📅
Track your pregnancy week by week
Save your due date, log your weight with personalized guidance, and build a bump journal — free, built by a registered midwife.
Join free →Want to explore interactively? Try the baby size slider tool →