Week 10
Trimester 1Days 9+0 to 9+6
Baby is now the size of a strawberry
Congratulations on reaching Week 10. This week marks a major milestone because your baby is now officially a fetus. The embryonic stage, when the basic structures of the body were formed, is complete. From now on, the focus shifts toward growth, refinement, and maturation. Although your baby is still tiny, nearly all major organs have already formed and are beginning to work together. For many mothers, first trimester symptoms are still present, but many people find that symptoms begin improving over the coming weeks.
Length
3–4 cm
1.2 in–1.6 in
Weight
4–5 g
8.8 lb–11.0 lb
Development highlights
- check_circleYour baby officially becomes a fetus this week — the embryonic stage is complete and the basic body plan is now in place.
- check_circleFingers and toes have separated and become much more distinct. Your baby can now bend their arms and legs.
- check_circleTiny fingernails and toenails are starting to form.
- check_circleFacial features — eyelids, nose, lips, ears, and jaw — continue maturing. The eyes remain closed.
- check_circleThe brain continues developing at an astonishing pace with new nerve connections forming constantly.
- check_circleMany organs have already formed and are beginning to function — including the heart, liver, kidneys, and intestines.
This week's milestones
- check_circleOfficially a fetus — embryonic stage complete.
- check_circleFingers and toes fully separated.
- check_circleTiny fingernails beginning to form.
- check_circleArms and legs can bend.
Fun fact
If you could see your baby this week, you would recognize tiny fingers, tiny toes, elbows, knees, and even the beginnings of fingernails.
Weekly checklist
- Continue prenatal vitamins.
- Stay hydrated.
- Eat regular meals and snacks.
- Attend scheduled appointments.
- Write down any questions for your healthcare provider.
- Take time to celebrate this milestone.
Frequently asked questions
Is my baby still considered an embryo?
No. This week your baby officially becomes a fetus. The embryonic stage, when all basic structures formed, is now complete.
Is it normal to still feel very nauseous?
Yes. Many people experience strong symptoms throughout Weeks 9 and 10. Most people find improvement after Week 12.
Can I have a baby bump yet?
Some people notice a small bump, while others simply experience bloating. Both are normal at this stage.
Is it normal for symptoms to come and go?
Yes. Symptoms can fluctuate from day to day and even hour to hour. This is completely normal.
Related tools
shopping_bagHelpful picks for Trimester 1
Browse all pregnancy products →Frida Mom Anti-Nausea Acupressure Bands
Drug-free acupressure wristbands for morning sickness relief — wear during the first trimester to ease nausea without medication.
Lokaheadr 1st Pregnancy Essentials Kit
Curated first-pregnancy essentials gift set for new moms-to-be — everything you need for a comfortable first trimester.
Momcozy Maternity Pregnancy Pillow
Full-length maternity pillow with removable sections for bump support, back relief, and comfortable side sleeping.
Some links are affiliate links. We may earn a small commission at no extra cost to you.
Explore more
Medical information disclaimer
The content on this page is provided for general informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment.
Always consult your GP, midwife, health visitor, paediatrician, or other qualified healthcare provider before making decisions about your health or your child's health and development. Never ignore or delay seeking professional advice because of something you have read on BabyScout. If you think there is a medical emergency, call 999 (UK) or your local emergency services immediately.