10 Weeks Pregnant
Reviewed by Safi Allah Khan
Medically reviewed by: Safi Allah Khan · Written by the Momi team · Last updated 20 October 2026
Quick answer: At 10 weeks pregnant, your baby is about the size of a kumquat, about 3.1 cm (1.2 in) long. You're in the first trimester, in month 3, with 30 weeks to go until your due date. This week's milestone: all major organs forming. Symptoms vary from person to person.
| Week 10 at a glance | |
|---|---|
| Trimester | First |
| Month | 3 |
| Weeks to due date | 30 |
| Baby's size | About the size of a kumquat |
| Length | About 3.1 cm (1.2 in) |
| Weight | About 4 g (0.1 oz) |
| This week | All major organs forming |
Sizes are typical averages. Before about 20 weeks, length is measured crown to rump; after that, head to heel.
Your baby at 10 weeks
Your baby is about the size of a kumquat and weighs about 4 g (0.1 oz). All the major organs are forming, and tiny nails are starting to grow.
Your body at 10 weeks pregnant
You might notice your waistband getting tighter. Visible veins on your chest or belly are common as your blood volume increases.
Things to do this week
- Ask about the dating scan and screening options for weeks 11 to 14.
- Keep active with gentle exercise such as walking, if your provider agrees.
- Stay hydrated, which can help with constipation.
When to call your doctor or midwife
Contact your care team straight away if:
- you have vaginal bleeding, especially with cramps or belly pain
- you have severe or one-sided belly pain, or pain in the tip of your shoulder
- you are vomiting so often you can't keep fluids down (the CDC flags being unable to drink for more than 8 hours)
- you have a fever of 100.4°F (38°C) or higher
- it hurts or burns when you pee
If something feels wrong, trust that feeling and call. In an emergency, call your local emergency number.
Track week 10 in Momi
Add your dating scan to Momi's appointments so you get a reminder. Momi follows your pregnancy week by week with your baby's size and development, and keeps your diary, bump photos, appointments, kick counts and contractions in one place.
Download Momi free on the App Store or Google Play. Free with ads; optional Premium.
Keep reading
← 9 weeks pregnant · All weeks · 11 weeks pregnant →
Sources
- ACOG: Changes During Pregnancy (infographic)
- NHS: Signs and symptoms of pregnancy
- NHS: Antenatal care and appointments
- CDC: Urgent Maternal Warning Signs
Medical disclaimer: Momi and this website provide general information, not medical advice. Always talk to your doctor or midwife; in an emergency call your local emergency number.
FAQ
How big is a baby at 10 weeks pregnant?
On average, a baby at 10 weeks is about the size of a kumquat: about 3.1 cm (1.2 in), about 4 g (0.1 oz). These are typical averages, and healthy babies vary.
How many months is 10 weeks pregnant?
10 weeks pregnant is in the third month of pregnancy and the first trimester. Months don't divide evenly into 40 weeks, so different sources may label the month slightly differently.
What should I do at 10 weeks pregnant?
Ask about the dating scan and screening options for weeks 11 to 14. Keep active with gentle exercise such as walking, if your provider agrees.
Related guides
Track this in Momi
Momi is a free pregnancy tracker app for iPhone and Android that follows pregnancy week by week, estimates the due date, and keeps a pregnancy journal, weight log, kick counter and contraction timer in one place.
