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Second trimester

19 weeks pregnant

At 19 weeks your baby is becoming more active, and hearing is developing. A fluttering feeling you might take for gas could be your baby moving, though many people don't feel anything yet. The anatomy scan often happens around now.

This page covers 19 weeks 0 days to 19 weeks 6 days (19+0 to 19+6), counted from the first day of the last period. Check how far along you are

Enter it to see the calendar dates of your week 19.

Botanical illustration of a mango

About the size of a mango

Typical estimated weight 275 g (10 oz) at 19+0, about 320 g (11 oz) by 19+6. This is the 50th centile; healthy babies commonly vary by about 12.7% either way.1

A reference value, not a measurement of your baby.

How your baby is developing

  • Between about 19 and 21 weeks your baby becomes more active, can hear, and starts to swallow.2
  • The adult teeth are starting to form, positioned behind the first set of teeth.3
  • Your baby can hiccup, and their fingerprints are fully their own.4
  • Sleep and wake cycles may be forming, and loud noises can wake your baby.4
  • Your baby keeps gaining weight steadily as they grow.3

Changes you may notice

Everyone’s experience is different. You may notice some of these, or none.

  • A fluttery feeling in your belly can be mistaken for gas, but it could be your baby moving. Many people start to feel kicks around this time, though in a first pregnancy it may not happen until after 20 weeks.3,4,5
  • The hormone relaxin loosens your ligaments, so your back, knees and ankles have less support than usual. Staying active is still encouraged, but activities such as running may start to feel uncomfortable.3
  • Sleeping on your side, with pillows to support your bump and one between your knees, may help you get comfortable.3
  • Pelvic pain, round ligament pain, heartburn, tiredness and stretch marks are all possible. Trust your instincts and share any worries with your midwife or doctor.3

Care around this week

  • In the US, the anatomy ultrasound is usually done between 18 and 22 weeks. UK: the 20-week screening scan is usually done between 18 and 21 weeks.6,7
  • Once movements are established, get to know your baby's usual pattern. If movements slow down, change or stop, contact your midwife or maternity unit straight away; do not wait until your next appointment. Don't use a home doppler to check on your baby.5
  • UK: the whooping cough vaccine is usually offered around 20 weeks and can be given from 16 weeks. In the US, Tdap is recommended during weeks 27 through 36.8,9

Questions to ask your provider

  • Which kinds of exercise still suit me now that my joints feel looser?
  • What sleeping position do you suggest for me?
  • Have I had the whooping cough vaccine, or when should I have it?
  • What should I do if I'm not sure whether I'm feeling movement?
When to contact your provider straight away

Call 911 (US) or 999 (UK) in an emergency, such as heavy bleeding or bleeding with severe pain, a seizure, chest pain, or severe trouble breathing.11,12,13,14

These symptoms are not always serious, but each one needs prompt advice from your provider, midwife or maternity unit (or NHS 111 in the UK if you cannot reach them) rather than waiting for your next appointment, and it helps to tell them you are pregnant.

  • Vaginal bleeding or spotting at any stage of pregnancy. Call 911 or 999 if the bleeding is heavy or comes with severe belly pain, shoulder pain, or feeling faint or dizzy.13,15
  • Fluid leaking or gushing from your vagina, or discharge that is unusual for you. Get checked straight away if the fluid is greenish, colored or smells bad.13,14,16,17
  • Your baby moving less than usual, not moving, or a change in their usual pattern of movements. Call immediately, even in the middle of the night, and do not use a home Doppler to check yourself.5,13
  • A severe headache that does not go away with simple painkillers or gets worse, or sudden changes in your vision such as blurring or seeing flashing lights.11,13,14
  • Sudden swelling of your face, hands or feet, or swelling, redness or pain in a leg.11,13,14
  • Belly pain that is severe or does not go away after resting, or pain just below the ribs.11,13,18
  • Regular tightenings or contractions, period-type pains, or backache that is unusual for you before 37 weeks, which can be signs of preterm labor.17,18
  • A fever of 100.4°F (38°C) or higher, or feeling hot, cold or shivery.13,14,17
  • Shortness of breath that comes on suddenly or happens when you lie flat, chest pain, a racing or pounding heart, or dizziness or fainting.13,14
  • Very itchy skin, especially on the palms of your hands or soles of your feet, or itching that is worse at night.19
  • Being sick so often that you cannot keep food or drink down, or signs of dehydration such as dark urine, peeing very little, or feeling dizzy.13,20
  • Thoughts of harming yourself or your baby. Get help right away, and call 911 or 999 if you think you might act on them.13,21

Questions about 19 weeks

Is the fluttering I feel at 19 weeks the baby?

It could be. Early movements often feel like fluttering or bubbling and are easy to mistake for gas. Over time you'll learn to recognize them.3,10

Is it safe to keep exercising at 19 weeks?

Staying active is encouraged in pregnancy, and the NHS suggests aiming for 150 minutes of exercise a week. Looser ligaments can make some activities, such as running, uncomfortable, so ask your provider what suits you.3

What position should I sleep in at 19 weeks?

NHS guidance at this stage suggests sleeping on your side, with pillows to support your bump and a pillow between your knees.3

Sources

  1. In utero analysis of fetal growth: a sonographic weight standardRadiology 181(1):129–133, 1991
  2. Fetal developmentUS National Library of Medicine
  3. 19 weeks pregnant guideNHS Best Start in Life
  4. Fetal development: week-by-week stages of pregnancyCleveland Clinic
  5. Your baby's movementsNHS (England)
  6. Ultrasound ExamsAmerican College of Obstetricians and Gynecologists
  7. 20-week screening scanNHS (England)
  8. Vaccinations in pregnancyNHS (England)
  9. Tdap Vaccination for Pregnant WomenUS Centers for Disease Control and Prevention
  10. Quickening in pregnancyCleveland Clinic
  11. Pre-eclampsiaNHS (England)
  12. Epilepsy and pregnancyNHS (England)
  13. Urgent Maternal Warning Signs and Symptoms (Hear Her campaign)US Centers for Disease Control and Prevention
  14. Pregnancy symptoms you need to get help forNHS (England)
  15. Vaginal bleeding in pregnancyNHS (England)
  16. Signs of going into labourNHS Best Start in Life
  17. Premature labour and birthNHS (England)
  18. Stomach pain in pregnancyNHS (England)
  19. Itching in pregnancyNHS (England)
  20. Severe vomiting in pregnancyNHS (England)
  21. Depression in pregnancyNHS (England)

Links checked November 12, 2026. Citing a source does not mean it endorses this site.

Written from the sources above and checked against them on 2026-11-12. Not reviewed by a clinician. Our editorial policy