Our Baby Journey9 weeks pregnant
9 weeks pregnant is about 2 months. It falls in the third month of pregnancy. You are in week 9 of 40, in the first trimester. Here is what is happening with your baby and your body this week.
Your baby is about the size of a cherry.
Length: about 2.3 cm (0.9 in) from crown to rump · Weight: about 2 g (0.07 oz)
Your baby at 9 weeks
The embryonic tail is gone, and the main organs are in place. Eyelids are forming.
Your baby is starting to look more like a tiny human. The body is straightening out, and the neck is becoming more defined. Fingers and toes are now more clearly separate, and the elbows can bend. The eyelids have grown enough to almost cover the eyes, and they will soon fuse shut, staying closed until around the end of the second trimester.
Muscles and nerves are developing together, so your baby is moving more, with small twitches and jerks that may be visible on a scan. The heart now has four chambers, and its valves are forming. Tiny buds that will become the baby teeth are developing in the gums.
The reproductive organs are forming inside, but the external genitals still look the same in all babies, so the sex cannot be seen on ultrasound yet. The placenta is gradually taking over hormone production from the corpus luteum.
Your body at 9 weeks
Hormonal changes can bring mood swings, heartburn, and constipation.
Progesterone relaxes the valve at the top of your stomach and slows digestion, which is why heartburn and constipation often appear around now. Hormone shifts, tiredness, and nausea can also leave you feeling tearful, anxious, or short-tempered. Your breasts may still be sore and growing, and some people notice more headaches or a stuffy nose because of increased blood flow to the mucous membranes. Your waist may be starting to thicken slightly. Small, frequent meals can help with both nausea and heartburn.
Your belly at week 9
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 9 weeks pregnant
- Heartburn or indigestion
- Constipation and bloating
- Mood swings
- Stuffy nose
- Headaches
- Ongoing nausea and tiredness
Checkups around week 9
If you have not had your first prenatal appointment yet, it may happen this week or next. Your provider will also explain the screening tests offered in the first trimester, such as a blood test and an ultrasound around 11 to 14 weeks. What is offered and when varies by country, and these tests are optional.
Tips for week 9
- Eat high-fiber foods and drink plenty of water to prevent constipation.
- Avoid lying down right after eating to reduce heartburn.
- Talk to someone you trust about how you're feeling.
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
Contact your healthcare provider or maternity unit straight away, or get emergency care, if you have:
- Vaginal bleeding
- Severe or persistent abdominal pain or cramping
- A severe headache, blurred vision, or sudden swelling of your face, hands or feet
- A fever of 38°C (100.4°F) or higher
- Fluid leaking from your vagina
- Severe vomiting where you cannot keep fluids down
- Your baby moving less than usual or a change in their pattern of movements (later in pregnancy)
- Regular contractions before 37 weeks
- Pain or burning when you urinate
- Feeling very low, anxious, or having thoughts of harming yourself
Have a question about week 9?
Ask our AI pregnancy assistant about symptoms, nutrition, scans or anything else on your mind this week.
Frequently asked questions
How big is my baby at 9 weeks pregnant?
At 9 weeks pregnant, your baby is about the size of a cherry. That is about 2.3 cm (0.9 in) from crown to rump, weighing about 2 g (0.07 oz).
How big is my belly at week 9 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 hear my baby's heartbeat at 9 weeks?
Sometimes, but often not yet. A handheld Doppler on the belly may occasionally pick up the heartbeat around 9 to 10 weeks, but it is more reliably heard from about 12 weeks. Not finding it this early is common and is usually because the uterus is still low in the pelvis.
What can I take for heartburn while pregnant?
Start with simple changes: eat smaller meals, avoid spicy or fatty foods if they trigger it, and stay upright for a while after eating. Raising the head of your bed can help at night. Some antacids are considered safe in pregnancy, but check with your doctor, midwife, or pharmacist before taking any medicine.
Is it normal to feel anxious or low at 9 weeks pregnant?
Many people feel worried or emotional in the first trimester, especially while waiting for a scan. Hormones, nausea, and tiredness all play a part. If low mood or anxiety lasts most days for two weeks or more, or interferes with daily life, tell your doctor or midwife, as support and treatment are available.
What trimester is 9 weeks pregnant?
Week 9 is in the first trimester, which covers weeks 1 to 13.
How many months is 9 weeks pregnant?
9 weeks pregnant is about 2 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.