Our Baby Journey30 weeks pregnant
30 weeks pregnant is about 7 months. It falls in the seventh month of pregnancy. You are in week 30 of 40, in the third trimester. Here is what is happening with your baby and your body this week.
Your baby is about the size of a cucumber.
Length: about 39.9 cm (15.7 in) from crown to heel · Weight: about 1.3 kg (2.9 lb)
Your baby at 30 weeks
The baby is gaining weight steadily. The lanugo hair is starting to disappear.
Your baby's fine lanugo hair is beginning to shed, although some babies are still born with a little on their shoulders or back. The bone marrow is now the main place where red blood cells are made, a job it will keep for life.
Your baby's brain is growing rapidly and its surface is becoming more deeply folded, allowing room for more nerve cells and connections. The eyes are more responsive to light, and your baby may turn toward or away from a bright light shone on your belly. Fat continues to build up under the skin, giving your baby a smoother, rounder appearance.
From now until birth, your baby will gain weight steadily. The amount of amniotic fluid continues to rise and usually peaks in the next few weeks, and as your baby grows bigger, there will gradually be less space to stretch out, so movements may feel more like squirms and rolls.
Your body at 30 weeks
Sleep can be harder, and you may feel emotional or anxious about the birth.
As you enter the final stretch, sleep may become harder because of discomfort, frequent urination, heartburn, and your baby's movements. You may also feel more emotional or anxious about the birth and becoming a parent. These feelings are common, but if you feel persistently low or anxious, talk to your doctor or midwife. Your growing belly can make it harder to see your feet and to bend down. Fatigue is common. Take naps when you can and accept help from others.
Your belly at week 30
In month 7 (weeks 28–31) your belly grows noticeably and may start to feel heavy. Stretch marks may appear. Fundal height is usually around 28–31 cm.
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 30 weeks pregnant
- Difficulty sleeping
- Mood swings or anxiety
- Fatigue
- Heartburn
- Back pain
- Swollen feet and ankles
Checkups around week 30
Prenatal visits often occur every two weeks around now. Your provider will continue to check your blood pressure, urine, fundal height, and your baby's heartbeat. You may discuss your birth preferences and any concerns. Timing varies by country.
Tips for week 30
- Try relaxation or breathing exercises before bed.
- Talk to your partner or provider about any worries.
- Start preparing the baby's space and essentials.
Common symptoms in the third trimester
The third trimester runs from week 28 until birth, usually around week 40. Your baby gains most of their weight, their lungs mature, and your body prepares for labor. Not everyone has every symptom, and it is normal for symptoms to come and go. Common ones include:
- Shortness of breath as your uterus presses up on your diaphragm
- Braxton Hicks (practice) contractions
- Swelling of the feet and ankles
- Trouble sleeping and getting comfortable
- Pelvic pressure and pain
- Needing to urinate more often again
- Heartburn and back ache
Read the full third 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 30?
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 30 weeks pregnant?
At 30 weeks pregnant, your baby is about the size of a cucumber. That is about 39.9 cm (15.7 in) from crown to heel, weighing about 1.3 kg (2.9 lb).
How big is my belly at week 30 of pregnancy?
In month 7 (weeks 28–31) your belly grows noticeably and may start to feel heavy. Stretch marks may appear. Fundal height is usually around 28–31 cm. Bump size, shape and when you start to show vary a lot from person to person.
Is it normal to feel anxious about birth at 30 weeks?
Yes, many people feel anxious as birth gets closer. Learning about labor through antenatal classes, talking about your fears with your partner or provider, and practicing relaxation techniques can help. If anxiety is affecting your daily life, sleep, or appetite, talk to your doctor or midwife. Support is available.
What position should my baby be in at 30 weeks?
At 30 weeks, many babies are still changing position, and it is common for them to be head-up (breech) or sideways. Most babies turn head-down by 36 weeks. Your provider will check your baby's position at later appointments. If your baby is still breech near term, your provider will discuss options with you.
What should I prepare for my baby at 30 weeks?
This is a good time to start gathering essentials such as a car seat, a safe place for your baby to sleep, clothes, and diapers. You might also pack a hospital bag in the coming weeks. Consider learning about infant feeding and newborn care. Having the basics ready can ease stress as your due date approaches.
What trimester is 30 weeks pregnant?
Week 30 is in the third trimester, which covers weeks 28 to 40.
How many months is 30 weeks pregnant?
30 weeks pregnant is about 7 months. It falls in the seventh month of pregnancy. The seventh month covers weeks 28 to 31. 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.