At six months pregnant (roughly weeks 23 through 27), most people have a clearly visible baby bump, with the top of the uterus sitting at or just above the belly button. The baby is about the length of a head of lettuce by month’s end, weighing around 2¼ pounds. But what “six months pregnant” actually looks like varies enormously from person to person, and the changes happening inside are just as dramatic as the ones on the outside.
How Big the Belly Gets
Your uterus reaches your belly button around week 20, and by week 24 to 27 it sits a few inches above it. Healthcare providers track this with a simple tape measure from your pubic bone to the top of the uterus. That measurement, called fundal height, roughly matches your week of pregnancy in centimeters, plus or minus two. So at 26 weeks, you’d expect a measurement between 24 and 28 centimeters.
What your belly looks like at this stage depends on several things that have nothing to do with the baby’s health. If your abdominal muscles were strong before pregnancy, you’ll likely carry higher because those muscles support the weight better. Looser abdominal tone means a lower-sitting bump. Taller people tend to carry more in front, while shorter people often see the weight spread to the sides. And if this isn’t your first pregnancy, you’ll probably look noticeably bigger than you did at the same point the first time around, because your abdominal muscles have already been stretched.
What the Baby Looks Like
By the end of month six, your baby weighs about 2¼ pounds (roughly 1 kilogram) and measures around 13¾ inches from head to heel. That’s a fully formed little person in miniature, complete with eyebrows and eyelashes by week 26. The eyes are developed but may not open for another couple of weeks after that.
The lungs are making a substance that will eventually allow the air sacs to inflate and stay open after birth, though they still need more time to mature. By week 25, the baby responds to familiar sounds, particularly your voice. This is a genuinely interactive stage of development: the baby sleeps and wakes on a cycle, reacts to noise and light, and is increasingly coordinated in movement.
The Viability Milestone
Month six includes a significant medical threshold. At 24 weeks, survival outside the womb becomes possible with intensive medical support. Recent data from the American Academy of Pediatrics puts survival at about 71% for babies born at 24 weeks who receive intensive care, rising to 82% at 25 weeks. These are not easy outcomes, though. Only about 26% of 24-week survivors leave the hospital without severe complications, and the median hospital stay is 127 days, over four months. This context matters not because most pregnancies end this early, but because it highlights just how much development is still happening during month six.
Body Changes You Can See
Beyond the bump itself, six months brings a collection of visible changes. A dark vertical line called the linea nigra often appears, running from your belly button down to the pubic hairline. Stretch marks may become more noticeable as the skin accommodates rapid growth. Between 15% and 50% of pregnant people develop melasma, sometimes called the “mask of pregnancy,” which shows up as darker patches on the face, particularly the cheeks, forehead, and upper lip. It’s harmless and painless, driven by rising hormone levels, and it typically fades after delivery.
Swelling in the ankles, fingers, and face is common at this stage. Mild, gradual swelling is normal. Sudden or extreme swelling, especially paired with rapid weight gain, is a different situation that needs prompt medical attention since it can signal a blood pressure complication called preeclampsia.
What Six Months Feels Like
Movement is one of the defining features of this stage. You’ve likely been feeling flutters and rolls for a few weeks already, but around months five and six those sensations become more distinct: jabs, kicks, and rolls that are unmistakable. Ten movements in one to two hours is considered a typical pattern. Formal kick counting becomes more important starting at week 28, but by the end of month six you’re already getting familiar with your baby’s movement habits.
Braxton Hicks contractions can start appearing now too. These are irregular tightening sensations across the belly that come and go without a pattern. They’re your uterus practicing, not a sign of labor, but they can be startling if you’re not expecting them.
The Glucose Screening Test
One thing that happens during month six that catches some people off guard is the glucose screening test, typically scheduled between weeks 24 and 28. This is a routine test for gestational diabetes. You drink a sugary solution and have your blood drawn an hour later to see how your body processes the sugar. Most people pass without issue, but those who don’t will follow up with a longer version of the test to confirm whether gestational diabetes needs to be managed for the rest of pregnancy.
Why Every Bump Looks Different
If you’re comparing yourself to other people at the same stage, or to photos online, keep in mind that “six months pregnant” can look remarkably different from one person to the next. Someone who is 5’2″ with relaxed abdominal muscles carrying their second baby will look very different from someone who is 5’10”, athletic, and pregnant for the first time. Placenta position matters too: an anterior placenta (one attached to the front wall of the uterus) can make the bump appear larger or rounder, and it can also muffle the sensation of kicks. None of these variations say anything about the health of the pregnancy. Fundal height measurements and ultrasounds are far more reliable indicators than how the bump looks from the outside.