Your baby this week
Your baby now weighs about two and a quarter pounds — roughly a kilogram — and measures around fifteen inches long, about the size of an eggplant. And this week brings one of the sweetest developments yet: your baby's eyes are opening. The eyelids, which were fused shut while the eyes developed, are parting now, complete with little eyelashes — your baby can blink, and their eyes may respond to bright light shining through your belly.
Even more amazing: your baby's brain is in a construction boom. Its surface is developing the grooves and wrinkles that give the brain more room for all that learning to come, and sleep studies of babies at this stage show clear sleep cycles, including the rapid-eye-movement stage — the dream stage. Which means, in all likelihood, your baby is already dreaming. Of what? Warmth, muffled voices, and the rhythm of your heart, most likely — the only world they know, and a pretty good one.
The rest of the body is keeping pace. The lungs continue to mature, and your baby keeps practicing those breathing movements. You may feel hiccups: a small, rhythmic, jumping sensation that repeats for a few minutes — many moms find them funny once they know what they are. Fat is layering under the skin, so your baby is steadily looking less wrinkled and more like the newborn you'll meet. Your baby can hear well now and may recognize your voice — the most familiar sound in their world.
And from here, growth becomes your baby's full-time job: over the remaining weeks, your baby will roughly triple in weight, laying down the fat that will help them stay warm after birth. Bones are hardening — though the skull stays cleverly flexible for the journey out — tiny fingernails are in place, and your baby's grip is getting stronger. In the coming weeks, many babies begin spending more and more time in the head-down position, though there's still plenty of room, and plenty of time, for somersaults.
Your body & symptoms: the home-stretch cast
And you, mama — welcome to a trimester with personality. Your uterus has grown high now, up near your ribs, which is why shortness of breath joins the regular cast: there is simply less room for your lungs to expand. Feeling winded climbing stairs or mid-sentence is very common at this stage, and your body is actually compensating beautifully — it's your growing baby taking up the space, not your lungs failing you.
Back and pelvic aches tend to level up now, as your center of gravity pulls forward and pregnancy hormones keep your joints loose. Heartburn and indigestion often worsen as your stomach shares its neighborhood with a growing uterus. The frequent bathroom trips of the first trimester make their return tour, because your baby's head may now be using your bladder as a pillow. Sleep gets more complicated, and Braxton Hicks practice contractions may become more noticeable: irregular tightenings that ease when you rest or change position.
Also on the week-28 roster: mild swelling in feet and hands, itchy stretching skin, vivid dreams of your own, a touch of clumsiness as your balance shifts, and possibly a little colostrum — your body may begin producing your baby's first food before the baby even arrives.
Two more frequent visitors deserve a mention: hemorrhoids and varicose veins, both caused by increased blood volume and the pressure of your growing uterus. They're common, they're nobody's favorite topic, and gentle movement, not sitting in one position too long, and fiber-rich foods with plenty of water are the usual comforts — and your doctor can suggest more if they're troubling you. All of it is your body doing deep, purposeful work. Uncomfortable? Often. Meaningless? Not for a second.
Your appointments now: every two weeks
One practical change arrives right about now: your prenatal visits typically become more frequent. Many doctors see you about every two weeks from around week 28 until about week 36, and then weekly until the birth. It can feel like a lot of appointments, but each one is a quiet safety net: your blood pressure and urine are checked, your weight and your belly's growth are measured, the baby's heartbeat is listened to, and later on, your doctor will feel for the baby's position. Those routine blood pressure and urine checks matter more than they look — they're how your team screens for conditions like preeclampsia, which we'll cover in the warning signs.
This stretch often includes a second round of blood work too. Your doctor may recheck your blood count, since anemia — low iron stores — is common in the third trimester and can be one reason behind real exhaustion, so if you are unusually tired, say so. If your blood type is Rh-negative, there's a standard, routine step around 28 weeks: an Rh(D) immune globulin injection, which protects future pregnancies — your doctor will discuss it with you if it applies.
And this is the window when many doctors recommend the Tdap vaccine against whooping cough, so that protection passes to your baby before birth; a flu shot is often discussed in season, too. These are conversations to have with your own doctor, who knows your history — bring your questions and decide together.
Two more agenda items for these visits: it's a perfect time to start talking birth preferences — our Birth Plan post in this series walks you through it — and to sort out hospital registration or pre-registration if your birthplace offers it. Future you, in labor, sends thanks.
Getting to know your baby's movement pattern
Now, one of the most valuable skills of the third trimester: knowing your baby's movement pattern. Movement is your baby's way of checking in with you, and learning what's normal for your baby helps you notice a change early — and noticing early is exactly what your care team wants.
Here's a simple way many moms do it. Pick a time when your baby is usually active — after a meal, or in the evening, are classic baby party hours. Sit with your feet up or lie on your side, and quietly tune in. Count any movements — kicks, rolls, stretches, pushes all count; hiccups are their own separate rhythm. One common approach is counting to ten movements and noting how long it takes; many babies reach ten in well under an hour, and one widely used guideline is ten movements within about two hours.
But hear this part clearly: every doctor has a preferred method — some hand you a chart, some simply ask you to know your baby's pattern — so ask yours exactly how they want you to track, and follow their way. Because the pattern matters more than any single count. You will learn your baby's personality: the morning stretches, the post-lunch wiggle session, the evening dance party.
And if you ever notice a clear decrease, or a pattern that feels different from your baby's normal, that is always worth a call the same day — even if a count session later feels fine, even if you feel a little silly. Doctors would rather check a healthy baby a hundred times than miss the one time it mattered. Your awareness is not a burden to them; it's part of the care.
Comfort in the third trimester
A little comfort briefing before we close. For the breathlessness: sit tall when you can, keep meals smaller and more frequent, and let stairs be a slow activity, not a race. For your back and pelvis: keep that pillow between your knees at night, change positions often during the day, and accept the waddle — your hips are doing logistics now. For swelling: feet up whenever the chance appears, ankle circles while you sit, and a walk each day to keep circulation moving.
Sleep deserves its own mention — side sleeping with a small pillow village, a real wind-down routine, and a battle plan for the heartburn and bathroom trips of the night shift; our series has a full video on pregnancy sleep when you want the deep dive.
And one emotional weather report: around now, many women notice the nesting instinct switching on — a sudden, powerful urge to organize, clean, and prepare. Ride it gently: make the lists, fold the tiny clothes, enjoy the energy — then stop before you're deep-cleaning the ceiling fan at midnight.
And a standing rule for the whole trimester: rest is not a reward you earn at the end of the to-do list. At week 28, rest is on the to-do list. In bold. Preferably with snacks.