28 Weeks Pregnant: What’s Happening in Your Body and What to Expect Now

At 28 weeks pregnant, you’ve crossed a threshold that matters: your baby is now considered viable, with survival rates above 90% if born early with medical support.

But viability is only part of what’s happening right now. Your baby’s brain is folding at a frantic pace, their eyes are opening and closing, and they’re layering on the fat that will give them that newborn softness. Meanwhile, your body is shifting into a gear that feels heavier, slower, and genuinely harder to navigate.

Here’s what you need to know about 28 weeks pregnant — what’s developing in there, what’s changing in your body, and what actually matters as you move into these final weeks.

What’s Happening at 28 Weeks Pregnant: Baby’s Development

Here’s something worth sitting with for a second: the baby growing inside you right now is the size of a large eggplant — around 14 to 15 inches long and close to 2.5 pounds.

That’s real weight. Real baby. And at 28 weeks, you’ve crossed a threshold that matters more than most pregnancy milestones get credit for.

This is considered the viability milestone. Babies born at 28 weeks have survival rates above 90% with the right medical support. That number would have been unthinkable a generation ago.

But what’s happening inside that little body is just as remarkable as the survival stats. The brain is developing at an almost frantic pace right now — forming the grooves and folds that will eventually support thinking, memory, and movement.

The AAP notes that the third trimester is a critical window for brain growth, with rapid neural connection development that continues well into the first years after birth.

Your baby’s eyes are also opening and closing now. They can detect light filtering through your belly. They’re practicing breathing movements, even though their lungs aren’t fully mature yet.

Fat is beginning to layer under the skin. That’s what gives newborns their soft, rounded look — and right now, yours is just starting to build it.

If you haven’t already, this is also a good time to start thinking about what comes after birth — things like cord blood banking, which some families decide on before their due date arrives.

There’s a lot happening in there. More than any week-by-week app can fully capture. Your body is doing something extraordinary, even on the days it doesn’t feel that way.

Your Body at 28 Weeks Pregnant: Physical Changes and Symptoms

Here’s the honest truth: the third trimester hits different. You might have felt pretty good in the second trimester, and now suddenly everything feels heavier, slower, and harder to navigate.

That’s because it is. Your body is doing an enormous amount of work right now.

Weight gain at this stage typically sits somewhere between 17 and 24 pounds total, though every body is different. What matters more than the number is that steady, consistent growth — your provider will track that with you.

Braxton-Hicks contractions are common from here on out. They feel like a tightening across your belly — usually irregular, usually short, and usually not painful. They’re your uterus practicing. If they become rhythmic or start coming with pressure or back pain, that’s worth a call to your provider. And if you’re ever unsure whether what you’re feeling is real labor, it helps to already know when to go to hospital during labor so you’re not guessing in the moment.

Other things you might be dealing with right now: heartburn, swollen feet and ankles, shortness of breath, round ligament pain, and a back that never quite stops aching.

Sleep is also getting harder. Between the bathroom trips, the hip discomfort, and the general impossibility of finding a position that works — rest can feel like a distant memory.

The AAP recommends sleeping on your side during the third trimester to support healthy blood flow to your baby. supportive pillows

Your body isn’t broken. It’s just carrying something incredibly important — and it’s asking you to slow down and pay attention.

Glucose Screening and Testing at 28 Weeks

Nobody loves hearing “you need another test.” Especially when you’re already tired and your body has a full-time job just existing right now.

But the glucose screening at this point in pregnancy is genuinely one worth showing up for. It’s typically done right around the time you’re 28 weeks pregnant, and it’s how your care team checks for gestational diabetes — a condition that affects blood sugar during pregnancy and can be managed really well when caught early.

The one-hour test is the first step. You drink a sweet glucose solution, wait an hour, and get your blood drawn. That’s it. You don’t need to fast beforehand for this one — though it’s worth confirming with your provider.

If your number comes back elevated, that doesn’t mean you have gestational diabetes. It means you move on to the three-hour test, which is more detailed. Lots of people screen high and test completely normal.

If gestational diabetes is confirmed, your team will walk you through what that means for your care. The AAP notes that well-managed gestational diabetes significantly reduces the risk of complications for both mother and baby — so catching it matters.

It’s not a reflection of anything you did wrong. Your placenta is producing hormones that can interfere with insulin. That’s a pregnancy thing, not a you thing.

What you eat matters throughout pregnancy, not just if you get a flag on this test. If you want a solid foundation, our guide on what to eat in early pregnancy first trimester is a good place to start thinking about nutrition as a whole — not just in the weeks leading up to this screening.

Go in informed. Get the test done. And then let your care team do their job alongside you.

Sleep, Comfort, and Wellness Strategies at 28 Weeks

Nobody tells you that the exhaustion of the third trimester hits differently. You’re tired, but you can’t get comfortable. And then when you finally do, you need to pee.

Here’s what actually helps: left-side sleeping is your best position right now. It takes pressure off your major blood vessels and keeps circulation flowing to your baby. If you wake up on your back, don’t panic — just roll back over.

A pillow between your knees is non-negotiable. It keeps your hips aligned and takes the strain off your lower back. A lot of people eventually graduate to a full-length body pillow, and honestly, it’s worth it.

Heartburn will wake you up. Eating your last meal at least two hours before bed makes a real difference. Propping your upper body slightly with an extra pillow can also help keep things where they belong.

Leg cramps are common at this stage. Stretching your calves before bed helps. So does staying on top of hydration throughout the day — just taper off in the evenings so you’re not up every hour.

Your mind is probably running at full speed too. The to-do lists, the what-ifs. A simple wind-down routine — same time every night, phone down, something quiet — genuinely signals your nervous system to slow down.

And if round ligament pain or pelvic pressure is disrupting your rest, a belly support band worn during the day can ease some of that tension before it builds. That same principle applies if you’re thinking ahead to diastasis recti belly band options postpartum — support during pregnancy can be part of a longer recovery picture.

Sleep won’t be perfect right now. But it can be better than it is tonight.

Preparing for Labor and Birth at 28 Weeks

Here’s the thing nobody tells you: thinking about birth at 28 weeks doesn’t mean you’re getting ahead of yourself. It means you’re being kind to the version of you who will be exhausted and emotional in a few months and really grateful she already figured this out.

Start with your birth plan — but hold it loosely. Write down what matters to you: who’s in the room, your feelings about pain management, skin-to-skin contact immediately after delivery. Put it on paper so your care team knows your intentions. Then remind yourself that birth has its own plans too.

The hospital bag is one of those things that feels huge until you actually start packing it. Keep it simple. Comfort items for you, a going-home outfit for baby, your phone charger, a snack you actually want to eat. If you end up having a c-section recovery ahead of you, pack loose, soft waistbands — your future self will thank you.

Mental preparation is the part most people skip. But it might be the most important part.

Being 28 weeks pregnant means you still have time — real time — to do the inner work. What are you scared of? Name it. Talk about it with your partner, your midwife, a therapist, a friend who’s been through it. Fear that lives in your head unchecked gets louder. Fear you speak out loud tends to shrink.

You don’t need to feel ready. Nobody really feels ready. You just need to feel like yourself walking into it — informed, supported, and not alone.

That’s enough. That’s actually everything.

Nutrition and Exercise at 28 Weeks Pregnant

Here’s the honest truth: your body is working harder right now than it ever has. And it needs more — more food, more water, more rest, more grace.

Calorie needs go up by roughly 300–500 extra calories a day in the third trimester. That’s not a lot. A handful of nuts and some Greek yogurt. You don’t need to overthink it — you just need to actually eat.

Hydration matters more than most people talk about. Dehydration in late pregnancy can trigger contractions, increase dizziness, and make Braxton Hicks way worse. Aim for 8–10 glasses of water a day and more if it’s warm or you’ve been moving.

Nutrient priorities right now: iron (your blood volume is still expanding), calcium (baby is building bone density fast), and omega-3s (especially DHA for brain development). The AAP recommends that pregnant people consume at least 200mg of DHA daily to support fetal brain and eye development. Your prenatal vitamins matter here — check that yours actually includes DHA, because not all of them do.

Movement still belongs in your life. It helps with swelling, sleep, mood, and labor prep. But the modifications are real now.

On your back is out after the first trimester — it compresses a major vein and can reduce blood flow to the baby. High-impact, twisting, or anything with a fall risk comes off the table too. For a full breakdown of what to skip and why, what exercises to avoid when pregnant is worth a read.

Walking, swimming, prenatal yoga, and modified strength work are all fair game. Listen to your body over any rule. If something feels wrong, stop.

You’re not being fragile. You’re being smart.

When to Call Your Doctor: Red Flags at 28 Weeks

Here’s the thing nobody tells you enough: most of what you feel at this stage is just pregnancy being pregnancy. Uncomfortable, weird, exhausting — but not dangerous.

But some symptoms need a call. Not a Google search. A call.

If you have sudden swelling in your face or hands, a pounding headache that won’t budge, or vision changes like blurring or spots — call your provider now. Those can be signs of preeclampsia, and it moves fast.

Heavy vaginal bleeding, fluid leaking that isn’t discharge, or intense abdominal pain that comes on suddenly? Don’t wait on those either. Same goes for pain or burning when you urinate — UTIs in pregnancy can escalate to kidney infections quickly if they go untreated.

Reduced fetal movement is one people often second-guess. Trust yourself. The AAP recommends that pregnant women track fetal movement and contact their provider if they notice a significant decrease — because you know your baby’s patterns better than anyone.

If you’re 28 weeks pregnant and feeling fewer than 10 movements in two hours during a time your baby is usually active, call. Don’t apologize for it. Don’t convince yourself you’re overreacting.

Fever over 100.4°F, chest pain, trouble breathing, or one leg that’s swollen and painful (not both — one) are all reasons to get seen same day.

Signs of preterm labor — regular contractions before 37 weeks, pelvic pressure that feels like the baby is pushing down, or low back pain that comes and goes rhythmically — those warrant an immediate call too.

You’re not dramatic for calling. You’re not wasting anyone’s time. This is exactly what your provider is there for. Call first, worry about seeming like too much later.

Sources

• Mayo Clinic — fetal development milestones and viability in the third trimester.

Frequently Asked Questions

Is 28 weeks pregnant considered viable if baby is born early?

Yes. At 28 weeks, babies are considered viable, meaning they can survive outside the womb with appropriate medical care. Survival rates at this gestational age are above 90% with neonatal intensive care support.

What should my weight gain be by 28 weeks pregnant?

By 28 weeks, total weight gain typically ranges from 17 to 24 pounds, though every body is different. What matters most is steady, consistent growth tracked by your healthcare provider rather than hitting a specific number.

Why do I need a glucose test at 28 weeks pregnant?

The glucose screening at 28 weeks detects gestational diabetes, a temporary form of diabetes that develops during pregnancy. Early detection allows your provider to manage blood sugar levels and reduce risks for you and your baby during the remainder of pregnancy and birth.

What are normal Braxton-Hicks contractions at 28 weeks?

Normal Braxton-Hicks feel like irregular tightening across your belly, are usually short-lived, and are typically painless. Contact your provider if contractions become rhythmic, regular, or accompanied by pressure, back pain, or vaginal bleeding.

Can I fly or travel at 28 weeks pregnant?

Most healthcare providers consider 28 weeks a reasonable time to travel by plane, though policies vary by airline. Check with your provider and airline beforehand—many airlines restrict travel after 36 weeks for uncomplicated pregnancies.