First Trimester
Week 10: All vital organs are formed — growth and refinement now begin.
Here's everything happening with your baby and your body this week.
Your baby is the size of a
Strawberry
Length
1.2 in
Weight
4 g
Week
10 / 40
💡 Expert tip
The first trimester screening (blood test + ultrasound) is done at 10–13 weeks. It screens for chromosomal conditions.
🌱 Baby's development this week
- All organs formed and functioning
- Fingernails and toenails starting to grow
- Baby can swallow and produce urine
- Tooth buds present beneath gums
Science fact
All essential organs are formed by week 10 — the remaining 30 weeks are growth and refinement. From this point forward, the risk of major structural abnormalities drops dramatically.
🤰 Your symptoms this week
Visible veins on breasts and abdomen
blood volume has increased 45%
Skin changes: some women glow, others break out
both from estrogen
Round ligament pain begins
sharp twinges on sides of lower abdomen
Sharp pains when moving — normal. Rest, change positions slowly, warm compress.
💛 Changes in your body
- First trimester fatigue may begin easing soon
- Round ligament pain (sharp twinges on sides) may begin
- Frequent headaches possible from hormonal changes
- Skin may look clearer or more congested — both are normal
💙 Mental health this week
Many women feel relief around week 10 as nausea eases and energy returns. If you still feel anxious or low, prenatal mental health support is available and effective.
🥗 Nutrition focus
- Calcium 1000mg/day — essential for baby
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📅 Appointment / test
First trimester screening (nuchal translucency scan + blood test): done at 11–13 weeks. Screens for Down syndrome, trisomy 13, trisomy 18.
✅ This week's checklist
Schedule 11–13 week nuchal translucency scan
Begin tracking your mood — perinatal depression affects 1 in 5 women
Research maternity leave options at work
Track your pregnancy week by week
Interactive guide · 40 weeks · Fruit size visualizations · Personalized tips
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