Eight months pregnant covers roughly weeks 32 through 35 of pregnancy, placing you firmly in the third trimester with about four to eight weeks until your due date. Your baby weighs between 3¾ and 4½ pounds at this stage and measures around 11 to 12 inches from crown to rump. This is a month of rapid growth for the baby and significant physical changes for you, as your body prepares for delivery.
What’s Happening With the Baby
The eighth month is when your baby puts on weight fast, building up the fat layers that will help regulate body temperature after birth. At week 32, the average baby weighs about 3¾ pounds. By week 34, that jumps to over 4½ pounds. The baby is also getting longer, growing from roughly 11 inches to nearly 12 inches measured from the top of the head to the bottom of the torso.
Two critical systems are maturing during this stretch. The lungs begin producing surfactant, a substance that keeps the tiny air sacs from collapsing and allows the baby to breathe independently. Surfactant doesn’t develop until the eighth or ninth month, which is one reason babies born before this point often need breathing support. The brain is also undergoing a surge in development, forming billions of new connections that sharpen the baby’s ability to control body temperature, coordinate sucking and swallowing, and cycle between sleep and wakefulness.
You may notice the baby’s movements feel different now. Instead of dramatic kicks, you’re more likely to feel rolls, stretches, and sharp jabs as the baby runs out of room. The baby is also likely settling into a head-down position in preparation for birth, though some don’t turn until later.
Common Symptoms at 8 Months
Your uterus is now pushing up against your diaphragm and pressing down on your bladder, which creates a familiar pair of complaints: shortness of breath and frequent urination. The breathlessness tends to be worse when you lie on your back or recline, and you may find you get winded during activities that felt easy a few months ago. Meanwhile, as the baby drops deeper into your pelvis, bladder pressure increases. Leaking urine when you laugh, cough, or sneeze is common and nothing to worry about.
Braxton Hicks contractions become more noticeable this month. These are irregular tightenings across your belly that come and go without a pattern. They tend to show up in the afternoon or evening, after physical activity, or after sex, and they grow more frequent as your due date approaches. They’re your body’s way of practicing for labor, not a sign that labor is starting.
Swelling in the feet, ankles, and hands is typical. Elevating your legs when you sit, staying active with gentle exercise, and wearing compression socks can help. Pelvic pressure, lower back pain, and difficulty sleeping round out the list of symptoms most people experience during this month.
Sleep and Comfort
Side sleeping is the recommended position during the third trimester. Sleeping on your left side is especially beneficial because it allows the most blood flow to the baby and improves kidney function, which helps reduce swelling. Placing a pillow between your knees and another under your belly can create enough of a tilt to take pressure off your hips and back. Lying flat on your back for extended periods can compress a major blood vessel and reduce circulation to the placenta, so most providers advise against it at this stage.
Prenatal Visits and Testing
Your appointment schedule picks up during month eight. You’ll typically see your provider every two to four weeks, shifting to every one to two weeks once you hit 36 weeks. These visits generally include blood pressure checks, urine tests, measuring your belly, and checking the baby’s heart rate.
One important test happens during the third trimester: screening for Group B strep (GBS), a type of bacteria that about 25% of healthy women carry. The test involves a quick swab of the lower vagina and anal area. If you test positive, you’ll receive antibiotics during labor to prevent passing the bacteria to the baby. Some providers let you collect the swab yourself after giving instructions.
Warning Signs to Watch For
Most discomfort at eight months is normal, but certain symptoms need immediate attention. Preeclampsia, a dangerous blood pressure condition, is most likely to develop in the third trimester. The warning signs include severe headaches that won’t go away, vision changes like blurriness or light sensitivity, pain in the upper right side of the belly below the ribs, sudden swelling of the face and hands, and nausea or vomiting that feels different from typical pregnancy queasiness. Any combination of these warrants a call to your provider or a trip to the emergency room.
Preterm labor is the other major concern during month eight. The signs include contractions that come every 10 minutes or more often (six or more in an hour), a change in vaginal discharge such as fluid leaking or bleeding, a low dull backache that doesn’t let up, menstrual-like cramps, and pelvic pressure that feels like the baby is pushing down. Occasional Braxton Hicks contractions are fine, but regular, rhythmic tightening is not normal at this stage and should be evaluated quickly.
What Birth at 8 Months Looks Like
Babies born during the eighth month, between 32 and 35 weeks, are classified as moderate to late preterm. Their survival rates are very high, but they often need time in the NICU to finish developing. The biggest challenges are usually breathing (because surfactant production may not be complete), maintaining body temperature, and learning to feed effectively. Many babies born at 34 or 35 weeks need only a short hospital stay, while those born at 32 weeks may require several weeks of support. The goal of the remaining weeks of pregnancy is to give the baby as much time as possible to build lung maturity and put on weight.