How many months is 28 weeks pregnant?

28 weeks pregnant puts you in month 7 of pregnancy. Week 28 is the first week of that month, which runs to week 31. Providers count in weeks; months are approximate.

How big is the baby at 28 weeks?

At 28 weeks, the baby is about the size of a eggplant, roughly 37.6 cm long and around 1005 g. That is an average; healthy babies vary.

What are the chances for a baby born at 28 weeks?

Good. Data from 19 US university hospitals show that 94% of babies born alive at 28 weeks between 2013 and 2018 survived to go home. But a baby born now is not fully developed. The lungs are still immature, so these babies need care in a neonatal intensive care unit, and health problems are more likely the earlier a baby arrives. When an early birth seems likely, steroid shots are often given first to help the baby's lungs, brain and gut mature.

What position is my baby in at 28 weeks?

Right now it could be almost any way round. Babies this age still shift often and have room to turn, and some start moving head-down around now. Most have settled head-first before labour starts. At the end of pregnancy, only about 3 to 4% of babies are still bottom-first, which is called breech. Expect your provider to feel for the position at later checkups. If the baby is still bottom-first near 36 weeks, your team will explain what that means for the birth.

Is 3 lb big for 28 weeks pregnant?

No, it's within the usual range. Around 28 weeks, at the end of the seventh month, babies typically weigh between 2 and 3 pounds and measure 14 to 15 inches. So 3 pounds is at the upper end, not unusual. Keep in mind that a weight from a scan is only an estimate, and no way of measuring a baby before birth is 100% accurate. Your provider looks at how your baby grows over time, not at one number. Ask about your baby's percentile if you want more detail.

Which symptoms should you never ignore at 28 weeks pregnant?

Call your midwife, maternity unit or provider right away if your baby's movements slow down, feel different, or stop following their usual pattern. Don't wait until the next day. There's no set number of kicks to count; what matters is knowing what's normal for your baby. Also report bleeding or tummy pain the same day, and any fluid leaking or regular tightenings. Very itchy skin, mainly on your palms or soles and worse at night, needs urgent checks too, because it may point to ICP, a liver condition of pregnancy.

What should I know at 28 weeks pregnant with twins?

Expect more checks than with one baby. When each twin has its own placenta, a scan every 4 weeks is typical. Twins who share one placenta are scanned more often, because 10 to 15% of them develop twin-twin transfusion syndrome, where blood flow between the babies becomes uneven. A twin pregnancy also raises your chance of anaemia and pre-eclampsia, so your blood tests and blood pressure checks matter. Most twins are born before 37 weeks, so it's worth knowing the signs of early labour well before then.

28 Weeks Pregnant

Week 28 is the start of the third trimester. Head to heel, your baby now stretches to about 37.6 cm, close to the length of an eggplant. Its heart has slowed to around 140 beats a minute, and it can open its eyes and blink. Some babies start to turn head-down around now, but there is still plenty of time. In the US, checkups usually come every two weeks from here. This is also the week to start falling asleep on your side. This page covers the 28-week checkup and anti-D shot, whether you'll have a scan, your bump, a baby's chances if born now, and warning signs.

What trimester is 28 weeks?

Week 28 is in the third trimester, which runs from week 28 until birth. A due date is set at 40 weeks, 12 weeks from now.

Week 28 — third trimester, month 7; 12 weeks to go until your due date.
Baby's size — about a eggplant, ~37.6 cm.

Not sure it's 28 weeks? Try our due date calculator.

★ Start of the third trimester.

How big is your baby at 28 weeks?

Size of a

eggplant

Length, head to heel

~37.6 cm

Weight

~1005 g

Up from a cauliflower last week to a eggplant now.

Baby development at week 28

Welcome to the third trimester. The eyes can open, and the eyelashes have grown in. The lungs are still maturing, but most babies born now survive with neonatal care. Body fat continues to build. About the size of an eggplant.

What an ultrasound shows at 28 weeks

A routine scan at 28 weeks is unusual. In the US, the standard scan usually happens at 18 to 22 weeks, and in England the routine scans end by 21 weeks. A third-trimester scan is normally done for a reason, such as a bump that measures small or large, twins, or a placenta that was lying low. It can show the baby's position, movements, breathing motions and heartbeat, how much fluid there is, and where the placenta sits. It also gives an estimated weight, though no way of estimating a baby's size is exact.

For most people, the 28-week checkup takes the place of a scan. Your provider checks your blood pressure and pee, measures your bump and asks about the baby's movements. Blood is usually taken to look for anaemia and to confirm your blood group. If you're in the US and haven't done the glucose test for gestational diabetes yet, expect it now: it's normally done at 24 to 28 weeks. Vaccines come up too. The UK offers the RSV vaccine from 28 weeks, while US guidance is a dose at 32 to 36 weeks of pregnancy, between September and January in most of the country.

For anyone whose blood group is Rh negative, 28 weeks is when a shot of Rh immunoglobulin, also called anti-D, is usually offered. Late in pregnancy, a small amount of the baby's blood can reach yours. The shot stops your body from making antibodies against it, which could harm an Rh-positive baby, mostly in a future pregnancy. In the UK, your baby's blood group is tested too, and the injections are offered if there's a risk to the baby. If your baby turns out to be Rh positive, you'll usually get another dose after the birth.

Your body at 28 weeks

Strong, regular movements
Shortness of breath
Trouble sleeping and frequent bathroom trips
Possible swelling in the legs and feet

Your belly at 28 weeks

The top of your uterus, called the fundus, is now somewhere between your belly button and your breastbone. Measured from your pubic bone, a bump of about 28 cm is typical, and anything within 2 cm either way is in the usual range. The uterus keeps rising until about 36 weeks, when it reaches the breastbone. A reading that's a little high or low usually has a simple cause, like dates that are slightly out or a baby who is just smaller or larger than average. A scan can check.

Your bump is now heavy enough to matter at bedtime. From this week, research links falling asleep on your back with a higher risk of stillbirth, probably because it affects the flow of blood and oxygen to the baby. The safest way to fall asleep is on your side, left or right. Waking up on your back isn't a cause for alarm. Roll onto your side and go back to sleep.

Tips for week 28

Prenatal visits usually increase to every two weeks now
Get to know your baby's usual pattern of movements; you don't need to count kicks, but call at once if movements slow down or change
Sleep on your side to support blood flow to the baby

28 Weeks Pregnant: your questions

What trimester is 28 weeks?: Week 28 is in the third trimester, which runs from week 28 until birth. A due date is set at 40 weeks, 12 weeks from now.
How many months is 28 weeks pregnant?: 28 weeks pregnant puts you in month 7 of pregnancy. Week 28 is the first week of that month, which runs to week 31. Providers count in weeks; months are approximate.
How big is the baby at 28 weeks?: At 28 weeks, the baby is about the size of a eggplant, roughly 37.6 cm long and around 1005 g. That is an average; healthy babies vary.
What are the chances for a baby born at 28 weeks?: Good. Data from 19 US university hospitals show that 94% of babies born alive at 28 weeks between 2013 and 2018 survived to go home. But a baby born now is not fully developed. The lungs are still immature, so these babies need care in a neonatal intensive care unit, and health problems are more likely the earlier a baby arrives. When an early birth seems likely, steroid shots are often given first to help the baby's lungs, brain and gut mature.
What position is my baby in at 28 weeks?: Right now it could be almost any way round. Babies this age still shift often and have room to turn, and some start moving head-down around now. Most have settled head-first before labour starts. At the end of pregnancy, only about 3 to 4% of babies are still bottom-first, which is called breech. Expect your provider to feel for the position at later checkups. If the baby is still bottom-first near 36 weeks, your team will explain what that means for the birth.
Is 3 lb big for 28 weeks pregnant?: No, it's within the usual range. Around 28 weeks, at the end of the seventh month, babies typically weigh between 2 and 3 pounds and measure 14 to 15 inches. So 3 pounds is at the upper end, not unusual. Keep in mind that a weight from a scan is only an estimate, and no way of measuring a baby before birth is 100% accurate. Your provider looks at how your baby grows over time, not at one number. Ask about your baby's percentile if you want more detail.
Which symptoms should you never ignore at 28 weeks pregnant?: Call your midwife, maternity unit or provider right away if your baby's movements slow down, feel different, or stop following their usual pattern. Don't wait until the next day. There's no set number of kicks to count; what matters is knowing what's normal for your baby. Also report bleeding or tummy pain the same day, and any fluid leaking or regular tightenings. Very itchy skin, mainly on your palms or soles and worse at night, needs urgent checks too, because it may point to ICP, a liver condition of pregnancy.
What should I know at 28 weeks pregnant with twins?: Expect more checks than with one baby. When each twin has its own placenta, a scan every 4 weeks is typical. Twins who share one placenta are scanned more often, because 10 to 15% of them develop twin-twin transfusion syndrome, where blood flow between the babies becomes uneven. A twin pregnancy also raises your chance of anaemia and pre-eclampsia, so your blood tests and blood pressure checks matter. Most twins are born before 37 weeks, so it's worth knowing the signs of early labour well before then.

Useful at week 28

Blood type compatibility — how the Rh factor works and why anti-D is offered at 28 weeks
Fetal viability — how survival changes with each week if a baby comes early
Pregnancy weight gain calculator — your healthy range as the third trimester starts
Flying while pregnant — why airlines may ask for a letter from 28 weeks
Pregnancy weeks to months — 28 weeks is the first week of month 7

← All weeks: the full pregnancy week-by-week guide

Sources

Checked against the following public guidance on October 2, 2026. Advice can differ between countries; your doctor, nurse or midwife can apply it to you.