27 Weeks Pregnant: Symptoms, Baby Development, and What to Expect

What Does 27 Weeks Pregnant Mean?

27 Weeks Pregnant means you are twenty-seven weeks into the pregnancy timeline, counted from the first day of your last menstrual period. This is the final week of the second trimester, and next week begins the third trimester.

At 27 Weeks Pregnant, baby is growing steadily, gaining fat, and continuing to mature. Your baby’s movements may feel stronger, your belly may feel heavier, and symptoms like tiredness, backache, heartburn, leg cramps, and trouble sleeping may become more noticeable.

The NHS says that at 27 weeks, baby is around 36.6 cm long from head to heel, about the size of a head of cauliflower. The NHS also says baby’s lungs are now capable of breathing and baby is getting plumper by the day. NHS

At 27 Weeks Pregnant, your provider may also discuss glucose screening results, whooping cough or Tdap vaccination timing, travel rules, pelvic floor exercises, and what symptoms should be reported right away.

27 Weeks Pregnant Baby Size

At 27 Weeks Pregnant, baby is about the size of a head of cauliflower according to the NHS. The NHS gives a measurement of around 36.6 cm from head to heel. NHS

Size comparisons can vary by pregnancy guide, but a head of cauliflower is the week-specific comparison from the NHS. The main point is that baby is growing, gaining fat, and becoming stronger.

At 27 Weeks Pregnant, baby is still premature, but baby has developed much more than in earlier second-trimester weeks. Every week still matters because the lungs, brain, feeding ability, immune system, and body temperature control need more time to mature.

27 Weeks Pregnant Baby Development

At 27 Weeks Pregnant, baby development is focused on growth, fat gain, lung maturity, and stronger movement. The NHS says baby’s lungs are now capable of breathing, and baby is getting plumper as the folds of skin are filled out by fat. NHS

ACOG describes the second trimester as the time of rapid growth and development, lasting from 14 weeks and 0 days through 27 weeks and 6 days. ACOG

ACOG also notes that around 27 weeks, more fat is being added to help keep the fetus warm, and vernix has started developing as a waterproof barrier that protects the skin. ACOG

At 27 Weeks Pregnant, baby may sleep, wake, kick, roll, stretch, respond to sounds, swallow amniotic fluid, and practice breathing movements. Baby still needs more time in the womb for the brain, lungs, immune system, and feeding reflexes to mature.

27 Weeks Pregnant Symptoms

27 Weeks Pregnant symptoms may feel more intense because your belly is growing and the third trimester is close. Your back, hips, ribs, pelvis, legs, and lower belly may all feel more pressure now.

The NHS lists common symptoms at 27 weeks, including tiredness and sleeping problems, stretch marks, swollen and bleeding gums, round ligament pains, piles, headaches, backache, nosebleeds, indigestion and heartburn, bloating and constipation, leg cramps, feeling hot, dizziness, swollen hands and feet, urine infections, vaginal infections, skin changes, and thicker or shinier hair. NHS

You may also feel occasional belly tightening. Some women experience Braxton Hicks contractions in the second trimester. These are usually irregular and not painful like labor, but regular tightening, painful contractions, bleeding, leaking fluid, or strong pressure should be checked right away.

27 Weeks Pregnant Baby Movement

At 27 Weeks Pregnant, many women feel baby move clearly. Movements may feel like kicks, rolls, taps, nudges, stretches, turns, or little punches.

By 27 Weeks Pregnant, you may be learning your baby’s normal active times. Movement may be more noticeable after meals, when you are resting, or when you lie down at night.

If movement seems clearly reduced, weaker, stopped, or very different from your baby’s normal pattern, call your provider or maternity unit. Do not wait until the next day for movement concerns if your provider has told you to call.

27 Weeks Pregnant Cramping

Mild cramping at 27 Weeks Pregnant can happen. Your uterus is growing, ligaments are stretching, and digestion may still be slower because of pregnancy hormones.

Some women feel pulling, stretching, or side pains around this time. Occasional mild tightening can also happen. However, severe pain, regular tightening, or cramping that feels different from your normal should be checked.

Call your doctor right away if cramping is severe, one-sided, comes with heavy bleeding, shoulder pain, dizziness, fainting, fever, leaking fluid, regular tightening, pelvic pressure, or pain that feels very different from normal pregnancy discomfort.

27 Weeks Pregnant Spotting

Some women have light spotting at 27 Weeks Pregnant. Light spotting does not always mean something is wrong, but bleeding during pregnancy should still be mentioned to your healthcare provider.

If spotting becomes heavy, bright red, painful, or comes with dizziness, shoulder pain, one-sided pelvic pain, leaking fluid, regular contractions, pelvic pressure, or severe cramping, call your doctor quickly.

Your provider may recommend monitoring, an exam, bloodwork, or an ultrasound depending on your symptoms. It is better to call and ask than to guess.

27 Weeks Pregnant Glucose Screening

At 27 Weeks Pregnant, glucose screening may be completed, scheduled, or coming up soon. Many providers screen for gestational diabetes between 24 and 28 weeks, so this is a common time for that test.

The screening usually involves drinking a sweet glucose drink and having your blood sugar checked afterward. Follow your provider’s instructions because different offices may have different rules about eating before the test.

If your first screening result is high, it does not automatically mean you have gestational diabetes. It usually means your provider may order a longer follow-up test to check your blood sugar more carefully.

27 Weeks Pregnant Whooping Cough Vaccine

At 27 Weeks Pregnant, your provider may ask whether you have had the whooping cough vaccine during pregnancy. The NHS says the whooping cough vaccine is usually offered around week 20, but it can be given from week 16 to week 32. NHS

In the United States, providers often refer to this as the Tdap vaccine. Ask your own OB or midwife what timing they recommend for your pregnancy and location.

Vaccination advice can vary by country and medical history, so follow your healthcare provider’s guidance.

27 Weeks Pregnant Sleep and Travel

At 27 Weeks Pregnant, sleep may become harder. The NHS says sleeping on either side is better than sleeping on your back after week 28, and it suggests supporting your bump with a pillow and placing another pillow between your legs. NHS

The NHS also notes that 27 weeks may be the last week you can fly without a fitness-to-fly note, but airline rules vary. Check your airline’s cut-off dates and ask your provider before traveling. NHS

If you have pregnancy complications, high blood pressure, bleeding, preterm labor concerns, or a high-risk pregnancy, ask your provider before making travel plans.

27 Weeks Pregnant Ultrasound

At 27 Weeks Pregnant, baby can usually be seen clearly on ultrasound. Some pregnancies may have growth scans, follow-up anatomy images, placenta checks, or other ultrasounds depending on medical history and provider preference.

Baby may move, kick, roll, stretch, respond to sound, or turn away during the scan. Sometimes baby’s position makes it hard to get every image, and that does not automatically mean something is wrong.

Your provider will explain what they see based on baby’s measurements, your dates, placenta location, amniotic fluid, and your medical history.

27 Weeks Pregnant Body Changes

At 27 Weeks Pregnant, your belly may feel heavier and your posture may be changing. Your lower back may work harder, your hips or pelvis may feel more pressure, and you may need more breaks during the day.

Digestion may still be slower, causing bloating, constipation, piles, and heartburn. Drinking fluids, eating fiber-rich foods, moving gently if approved, and asking your provider about safe options may help.

You may also notice skin stretching, more visible veins, breast changes, leg cramps, trouble sleeping, or occasional belly tightening. These can happen in pregnancy, but severe pain, heavy bleeding, leaking fluid, regular tightening, or movement concerns should be checked right away.

What to Do at 27 Weeks Pregnant

If you are 27 Weeks Pregnant, keep up with prenatal care and ask what appointments, vaccines, or tests are coming next. This may include glucose screening follow-up, Tdap or whooping cough vaccination, and third-trimester appointment planning.

The NHS says week 27 is a good time to start doing pelvic floor exercises, which can help prevent leaking when you laugh, sneeze, or cough. NHS

You may want to ask your provider about movement expectations, glucose screening results, whooping cough or Tdap timing, safe exercise, travel rules, work concerns, back pain relief, preterm labor signs, and which symptoms should be reported right away.

What to Eat at 27 Weeks Pregnant

At 27 Weeks Pregnant, balanced meals with protein, fruits, vegetables, whole grains, healthy fats, and fluids can help support your body as the third trimester gets close.

The NHS says there is no need to eat for two, and extra calories are not needed until the third trimester, which starts in week 28. NHS

If heartburn or constipation is bothering you, smaller meals, slower eating, fluids, fiber-rich foods, and avoiding lying down right after eating may help. Ask your provider before taking medicines, supplements, or stool softeners.

What Not to Worry About Too Much at 27 Weeks Pregnant

It is normal to feel emotional at 27 Weeks Pregnant. You may feel excited to reach the third trimester soon, but also nervous about symptoms, birth plans, movement, glucose results, or whether everything is okay.

Movement may have active and quiet times, but you should still pay attention to what is normal for your baby. If movement seems clearly reduced or different, call your provider.

Try not to compare your bump, symptoms, movement pattern, scan results, or energy level to someone else’s. Every pregnancy has its own pattern.

When to Call Your Doctor at 27 Weeks Pregnant

Most mild symptoms at 27 Weeks Pregnant can be normal, but some symptoms should be checked quickly. Trust your instincts if something feels severe, unusual, or unsafe.

27 Weeks Pregnant Summary

27 Weeks Pregnant is the final week of the second trimester. At 27 Weeks Pregnant, baby is about the size of a head of cauliflower according to the NHS, baby is getting plumper, fat is filling out the skin, and the lungs are maturing.

The most important things to know about 27 Weeks Pregnant are simple: baby movement may feel stronger, glucose screening may be completed or coming up, pelvic floor exercises may help, and next week begins the third trimester.

If you are 27 Weeks Pregnant, keep taking care of your body, stay in contact with your healthcare provider, and call right away for heavy bleeding, severe pain, leaking fluid, regular tightening, dehydration, movement concerns, or symptoms that worry you.