Our Baby Journey19 weeks pregnant
19 weeks pregnant is about 4½ months. It falls in the fifth month of pregnancy. You are in week 19 of 40, in the second trimester. Here is what is happening with your baby and your body this week.
Your baby is about the size of a mango.
Length: about 15.3 cm (6 in) from crown to rump · Weight: about 240 g (8.5 oz)
Your baby at 19 weeks
A protective coating called vernix covers the skin. The senses of taste, smell, hearing, and touch are developing.
Your baby's skin is now coated with vernix, a white, creamy substance that protects it from the amniotic fluid it floats in. The fine lanugo hair covering the body helps the vernix stay in place. Some babies are still born with a little vernix on their skin, especially in skin folds.
In the brain, the areas that handle smell, taste, hearing, vision, and touch are specializing and forming more connections. Your baby can swallow amniotic fluid, which carries tastes from your diet, offering an early introduction to flavors.
If you are having a girl, her ovaries already contain all the eggs she will have in her lifetime. Your baby's arms and legs are now in proportion with each other, and their movements are getting stronger. Many babies also develop more regular patterns of sleep and wakefulness around this stage.
Your body at 19 weeks
You might feel sharp pain on the sides of your belly (round ligament pain) as the uterus stretches.
As your uterus grows, the round ligaments that support it on each side stretch and thicken. A sudden movement, like standing up, coughing, sneezing, or rolling over in bed, can make them tighten and cause a sharp, brief pain in the lower belly or groin, often on one side. You may also notice darker skin, such as a line running down the middle of your belly, called the linea nigra, or darker nipples. These changes are caused by pregnancy hormones and usually fade after birth.
Your belly at week 19
In month 5 (weeks 18–22) your bump is usually clearly visible. At about 20 weeks the top of the uterus reaches your belly button. From around 20 weeks, your fundal height (the distance in centimeters from your pubic bone to the top of the uterus) roughly matches the number of weeks you are pregnant, give or take about 2 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 19 weeks pregnant
- Sharp, brief pain on the sides of the lower belly
- A dark line down the middle of the belly
- Darker nipples and skin patches
- Backache
- Leg cramps
- Stronger, more regular baby movements
Checkups around week 19
If you haven't had it yet, your anatomy scan is likely to be scheduled within the next few weeks, usually between about 18 and 22 weeks. Routine prenatal visits continue, typically every four weeks in the second trimester. Schedules vary by country and clinic.
Tips for week 19
- Change position slowly to ease round ligament pain.
- A warm (not hot) bath can help with aches.
- Call your provider if pain is severe or doesn't go away.
Common symptoms in the second trimester
The second trimester runs from week 14 to week 27. Nausea often eases, energy returns, your bump starts to show, and you will begin to feel your baby move. Not everyone has every symptom, and it is normal for symptoms to come and go. Common ones include:
- A growing bump and weight gain
- First baby movements, usually felt between weeks 16 and 25
- Round ligament pain (sharp pains low in the belly or groin)
- Heartburn and indigestion
- Back ache
- A blocked nose or nosebleeds
- Leg cramps
- Skin changes such as a dark line on the belly or darker patches on the face
Read the full second 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 19?
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 19 weeks pregnant?
At 19 weeks pregnant, your baby is about the size of a mango. That is about 15.3 cm (6 in) from crown to rump, weighing about 240 g (8.5 oz).
How big is my belly at week 19 of pregnancy?
In month 5 (weeks 18–22) your bump is usually clearly visible. At about 20 weeks the top of the uterus reaches your belly button. From around 20 weeks, your fundal height (the distance in centimeters from your pubic bone to the top of the uterus) roughly matches the number of weeks you are pregnant, give or take about 2 cm. Bump size, shape and when you start to show vary a lot from person to person.
How can I tell round ligament pain from something more serious?
Round ligament pain is typically a sharp or pulling pain in the lower belly or groin that comes on with movement and passes within seconds or minutes when you rest. Contact your doctor or midwife if the pain is severe, constant, or comes with bleeding, fever, chills, pain when urinating, fluid leaking, or regular tightening of your belly.
What is the dark line on my belly?
It's called the linea nigra. Pregnancy hormones stimulate the cells that make pigment, which darkens a line of skin that was already there but was too faint to notice. It usually runs from the belly button down to the pubic bone and sometimes higher. It's harmless and usually fades in the months after birth. Protecting your skin from the sun can help limit darkening.
What is the best sleeping position at 19 weeks?
Lying on your side, either left or right, is usually the most comfortable position from now on, and it is recommended as pregnancy progresses because lying flat on your back can press on major blood vessels. A pillow between your knees or a pregnancy pillow behind your back can help you stay comfortable. If you wake up on your back, just turn onto your side.
What trimester is 19 weeks pregnant?
Week 19 is in the second trimester, which covers weeks 14 to 27.
How many months is 19 weeks pregnant?
19 weeks pregnant is about 4½ months. It falls in the fifth month of pregnancy. The fifth month covers weeks 18 to 22. 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.