Yes, 24 weeks is six months pregnant. The American College of Obstetricians and Gynecologists defines month six as weeks 21 through 24, placing you at the very end of your sixth month and deep into the second trimester. The math can feel confusing because pregnancy months don’t line up neatly with calendar months (which vary between 28 and 31 days), but the clinical answer is straightforward: week 24 wraps up month six.
Why Weeks and Months Don’t Line Up Cleanly
Pregnancy is tracked in 40 weeks, not nine calendar months. Because most calendar months are longer than four weeks, the week-to-month conversion never divides evenly. Doctors count from the first day of your last menstrual period, which means “week one” actually starts before conception. This is why you’ll sometimes see conflicting answers online, with some sources calling 24 weeks “almost six months” and others calling it “six months.” By the standard obstetric breakdown, 24 weeks is the last week of month six.
What Your Baby Looks Like at 24 Weeks
At this point, your baby measures about 8.25 inches from crown to rump (roughly 12 inches head to toe) and weighs around 1.3 to 1.5 pounds. The lungs are reaching an important stage: specialized cells are beginning to produce surfactant, a substance that keeps the tiny air sacs from collapsing. Surfactant production ramps up steadily from here through the end of pregnancy, and full lung maturity typically isn’t reached until around 36 weeks. But the groundwork is actively being laid right now.
Your baby can hear sounds, respond to light, and has developed a regular sleep-wake cycle you may be starting to notice through patterns of movement and stillness. Facial features are fully formed, and a thin layer of fat is beginning to fill out the skin.
The Viability Milestone
Twenty-four weeks is widely considered the threshold of viability, the point at which a baby born extremely early has a meaningful chance of survival with intensive medical care. According to a 2024 study published in Pediatrics covering 2020 to 2022 data, about 71% of babies born at 24 weeks who received life support survived to hospital discharge. That’s a significant jump from 53% at 23 weeks.
Survival, though, doesn’t tell the whole story. Among those 24-week survivors, only about 26% made it through without severe complications. The median hospital stay was 127 days, or roughly four months. More than half of survivors went home on supplemental oxygen or a monitor. These numbers aren’t meant to frighten you. Most people at 24 weeks will carry their pregnancy much further. But this milestone explains why your care team tracks your progress closely from here on.
What You May Be Feeling
Your uterus is now roughly the size of a soccer ball, and your fundal height (the distance from your pubic bone to the top of your uterus) should measure close to 24 centimeters, give or take two centimeters. Your provider will likely start measuring this at each visit as a quick check on your baby’s growth. If the measurement is notably off, it could simply mean your due date needs adjusting, or it may prompt a closer look with ultrasound.
Common symptoms at this stage include lower back pain, swollen ankles and feet, leg cramps, and round ligament pain (sharp twinges on the sides of your belly when you move suddenly). You may also start noticing Braxton Hicks contractions. These feel like a tightening across the front of your abdomen, sometimes like mild menstrual cramps. They come and go unpredictably, don’t get progressively stronger, and typically stop if you change positions or take a walk. They’re your uterus practicing, not a sign of labor. If contractions become regular, intensify, or come with other symptoms like pelvic pressure or fluid leaking, that’s a different situation worth immediate attention.
The Glucose Screening Test
Somewhere between now and 28 weeks, your provider will schedule a glucose challenge test to screen for gestational diabetes. The test is simple: you drink a sweet syrup containing 50 grams of sugar, wait an hour without eating or drinking anything besides water, and then have your blood drawn.
A blood sugar reading below 140 mg/dL is considered normal (some clinics use a lower cutoff of 130 mg/dL). If your result falls between 140 and 190 mg/dL, you’ll be asked to come back for a longer, three-hour version of the test to confirm or rule out gestational diabetes. A result of 190 mg/dL or higher on the initial screen typically means a diagnosis without needing the follow-up test. Gestational diabetes is manageable, but catching it now matters because uncontrolled blood sugar affects both your health and your baby’s growth in the remaining weeks.
What Comes Next
You’re about to cross into the third trimester, which begins at week 27 or 28 depending on the source. From here, prenatal visits become more frequent, typically shifting from monthly to every two weeks, and then weekly in the final stretch. Your baby will roughly triple in weight between now and delivery, and you’ll feel movement become stronger and more defined. Kick counts, or tracking how often you feel your baby move during a set period, often become part of the routine in the weeks ahead.
At 24 weeks you’ve completed 60% of pregnancy. The hardest physical stretch is still ahead, but so is the fastest period of your baby’s growth.