10 weeks pregnant

10 weeks pregnant is about 2½ months. It falls in the third month of pregnancy. You are in week 10 of 40, in the first trimester. Here is what is happening with your baby and your body this week.

Your baby at 10 weeks

The baby is now called a fetus. Bones and cartilage are forming, and tiny nails begin to grow.

Week 10 marks the end of the embryonic period, when all of your baby's major organs and body systems have formed. From here on, the focus shifts to growing and maturing. Because the main structures are now in place, your baby is less vulnerable to many of the things that can affect early development, though healthy habits still matter.

Your baby's fingers and toes are fully separated, and the arms and legs can bend at the joints. The cartilage in the skeleton is beginning to harden into bone. The brain continues to develop rapidly, and the forehead is prominent, giving the head a rounded look.

Internal organs are starting to work. The kidneys will soon begin producing urine, the stomach is producing digestive juices, and the liver is active. The part of the intestines that bulged into the umbilical cord will move back into the abdomen over the next couple of weeks.

Your body at 10 weeks

Veins on your breasts and belly may be more visible as your blood volume increases.

Your blood volume is rising steadily to support the placenta and your baby, which is why veins on your breasts and belly may look more visible. Your heart is working a little harder too. Your uterus is now about the size of an orange, and you may notice slight weight gain or a firmer lower belly, although a bump is usually not visible yet. Some people feel occasional round ligament twinges, brief sharp pains low on one or both sides.

Your belly at week 10

In month 3 (weeks 9–13) most people still don't look pregnant. Around 12 weeks the uterus rises out of the pelvis, and its top can be felt just above your pubic bone.

Belly size and shape vary a lot depending on your build, whether this is your first pregnancy, your baby's position and the amount of amniotic fluid. At checkups your doctor or midwife may measure your fundal height to track your baby's growth, and may arrange an ultrasound if the measurement is quite different from what they expect.

Symptoms at 10 weeks pregnant

• More visible veins
• Mild aches low in the belly or groin
• Ongoing nausea and tiredness
• Increased vaginal discharge
• Slight weight gain
• Heartburn or constipation

Checkups around week 10

From 10 weeks, you may be offered a noninvasive prenatal test (NIPT or cell-free DNA screening), a blood test that screens for certain chromosomal conditions. Combined first-trimester screening, which uses a blood test and an ultrasound, is usually done between about 11 and 14 weeks. Diagnostic chorionic villus sampling (CVS) may be offered from about 10 to 13 weeks if screening suggests a higher chance. Availability and timing vary by country.

Common symptoms in the first trimester

The first trimester runs from week 1 to week 13. It is when your baby's major organs, spine and heart form, and when many people feel the most tired and nauseous. Not everyone has every symptom, and it is normal for symptoms to come and go. Common ones include:

• Nausea and vomiting (morning sickness), which can happen at any time of day
• Tiredness and needing more sleep
• Tender, swollen breasts
• Needing to urinate more often
• Food aversions or cravings and a metallic taste
• Mood swings
• Light spotting around implantation

Read the full first trimester guide.

When to call your doctor or midwife

Have a question about week 10?

Ask our AI pregnancy assistant about symptoms, nutrition, scans or anything else on your mind this week.

Ask about week 10

Frequently asked questions

How big is my baby at 10 weeks pregnant?

At 10 weeks pregnant, your baby is about the size of a strawberry. That is about 3.1 cm (1.2 in) from crown to rump, weighing about 4 g (0.14 oz).

How big is my belly at week 10 of pregnancy?

In month 3 (weeks 9–13) most people still don't look pregnant. Around 12 weeks the uterus rises out of the pelvis, and its top can be felt just above your pubic bone. Bump size, shape and when you start to show vary a lot from person to person.

Can I find out my baby's sex at 10 weeks?

An NIPT blood test, which can be done from about 10 weeks, screens for certain chromosomal conditions and in many places can also report the baby's sex if you ask. Ultrasound cannot reliably show the sex yet, since the external genitals are still developing. That is usually possible at the anatomy scan around 18 to 22 weeks.

What is NIPT and is it required?

NIPT analyzes small fragments of the baby's DNA from the placenta that circulate in your blood. It screens for conditions such as Down syndrome. It is a screening test, not a diagnosis, so a high-chance result needs confirming with a diagnostic test. All prenatal screening is optional, and your provider can help you decide.

Is it safe to exercise in hot weather or use a hot tub at 10 weeks?

Overheating in early pregnancy should be avoided, so skip hot tubs and saunas and avoid exercising hard in very hot, humid conditions. Exercise in cooler parts of the day, drink plenty of water, and wear light clothing. Stop and rest if you feel dizzy, overheated, or unwell.

What trimester is 10 weeks pregnant?

Week 10 is in the first trimester, which covers weeks 1 to 13.

How many months is 10 weeks pregnant?

10 weeks pregnant is about 2½ months. It falls in the third month of pregnancy. The third month covers weeks 9 to 13. Pregnancy is about 40 weeks, or roughly 9 months, counted from the first day of your last period.

This page is general educational information and is not a substitute for advice from your doctor or midwife. Every pregnancy is different, and baby sizes are approximate averages. Last updated 2026-11-07. See our medical disclaimer.