At 35 weeks pregnant, you’re about five weeks from your due date, and both your body and your baby are making final preparations for birth. Your baby weighs roughly 5.5 pounds, is about 18 inches long, and is running out of room to move. Most of the major developmental milestones are behind you, but these last few weeks involve critical finishing touches, especially in the lungs.
How Your Baby Is Developing
By 35 weeks, your baby’s brain and nervous system are fully developed. That’s a major milestone, though the brain will continue building connections well after birth. What isn’t quite finished yet is the lungs. Your baby is actively producing surfactant, a substance that keeps the tiny air sacs in the lungs open so they can absorb oxygen. Full lung maturity typically arrives around 36 weeks, which is one reason every additional week of pregnancy matters at this stage.
Your baby is also putting on fat. That layer of fat beneath the skin helps regulate body temperature after birth and gives your baby the rounder, less wrinkled appearance you’ll see on delivery day. Most babies gain about half a pound per week during these final weeks.
What Your Body Feels Like
The physical reality of 35 weeks can be summed up in one word: pressure. As your baby drops lower into your pelvis (a process called “lightening”), you may feel intense pressure on your bladder, hips, and pelvic floor. Some women notice this weeks before labor, others not until the very end.
Frequent urination is one of the most common complaints at this stage. The baby’s head pressing on your bladder means more trips to the bathroom and a higher chance of leaking urine when you laugh, cough, sneeze, or bend over. Kegel exercises (squeezing and releasing the muscles you’d use to stop urinating) can help strengthen your pelvic floor. Panty liners are a practical backup.
Other symptoms you’re likely dealing with:
- Braxton Hicks contractions. These practice contractions can feel like a tightening across your belly. They’re irregular, usually weak, and tend to stop when you rest or drink water.
- Back and hip pain. The extra weight and shifting center of gravity strain your lower back. Sleeping with a pillow between your knees can help.
- Swelling in your feet and ankles. Mild swelling is normal. Sudden or severe swelling, especially in your face or hands, is worth calling your provider about.
- Shortness of breath. Your uterus is pushing up against your diaphragm. Once the baby drops lower, breathing often gets easier, though pelvic pressure increases.
- Trouble sleeping. Between the bathroom trips, the discomfort, and the anxiety, solid sleep becomes harder to come by. Naps during the day are fair game.
Telling Real Contractions From False Ones
At 35 weeks, any contractions deserve your attention because labor before 37 weeks is considered preterm. The key differences between Braxton Hicks and true labor contractions come down to pattern, strength, and location.
True labor contractions come at regular intervals, and as time passes, they get closer together. Each one lasts about 60 to 90 seconds. They steadily get stronger, and the pain typically starts in your back before moving to the front. Braxton Hicks contractions, by contrast, are irregular, stay weak or start strong and then fade, and are usually felt only in the front of your belly. A simple test: rest and drink water. If the contractions stop, they’re almost certainly Braxton Hicks. If they continue or intensify, call your provider.
Tracking Your Baby’s Movements
Your baby has less room to do somersaults now, but you should still feel regular movement. Kick counts are a simple way to monitor your baby’s well-being at home. Pick a time when your baby is usually active, lie on your side, and count movements. You should feel at least 10 movements within a two-hour window. If you don’t reach 10 in that time, contact your provider. A temporary slowdown can be normal, but it’s always worth checking.
Medical Appointments This Month
At 35 weeks, you’re likely seeing your provider every one to two weeks. These visits typically include a blood pressure check, urine test, fundal height measurement, and a check on your baby’s heart rate and position.
One important test is coming up soon: the Group B Strep (GBS) screening, recommended during week 36 or 37. Your provider will use a swab on your vagina and rectum and send the sample to a lab. About 1 in 4 women carry GBS bacteria, which is harmless to you but can be passed to your baby during delivery. If you test positive, you’ll receive antibiotics during labor to protect your newborn. It’s a routine test, not a sign of anything wrong.
Nutrition in the Final Stretch
You need about 300 extra calories per day during the third trimester, bringing most women’s total to roughly 2,400 calories daily. Those extra calories should come from nutrient-dense foods rather than empty ones, because your baby is drawing heavily on your stores of calcium, iron, and folic acid right now.
Iron is especially important. Your body is supporting a dramatically increased blood supply, and low iron levels can leave you exhausted and increase the risk of complications. If you haven’t already, make sure your prenatal vitamin includes iron, folic acid, and calcium. Eating iron-rich foods like lean red meat, spinach, and lentils alongside a source of vitamin C (which helps with absorption) makes a real difference in how you feel during these final weeks.
Preparing Your Body for Birth
If you’re planning a vaginal delivery, 35 weeks is a good time to start perineal massage. The perineum is the tissue between your vagina and rectum, and it needs to stretch significantly during birth. Regular massage of this area starting at 34 or 35 weeks has been shown to reduce the risk of tearing and lower the chance of needing an episiotomy (a surgical cut to widen the opening). The benefit is most pronounced for first-time mothers. Your provider or a childbirth educator can walk you through the technique.
This is also a reasonable time to finalize your birth preferences. Whether you have strong feelings about pain management, positions during labor, or who you want in the room, writing these down and sharing them with your provider now gives everyone time to discuss what’s realistic.
Packing Your Hospital Bag
At 35 weeks, your hospital bag should be packed or close to it. Here’s what actually matters:
- Documents: Insurance card, hospital paperwork, birth plan if you have one, and a list of any medications you’re taking with dosages.
- For you: Loose-fitting clothes and a robe, nonslip socks, slip-on shoes for going home, toiletries, lip balm (labor dries out your lips), your phone and charger, snacks, and a water bottle. A nursing bra is worth packing even if you’re unsure about breastfeeding.
- For the baby: A going-home outfit, a breastfeeding pillow if you plan to nurse, and an infant car seat properly installed in your vehicle. The hospital will not let you leave without one.
- For your partner: A change of clothes, comfortable shoes, their own snacks, toiletries, and a phone charger. Labor can take a long time.
- Leave at home: Jewelry, cash, valuables, and contact lenses (you may need to wear glasses if you end up needing anesthesia).
What These Last Weeks Are Really About
The stretch from 35 weeks to delivery is a strange combination of impatience and preparation. Your baby is gaining weight and putting the finishing touches on lung development. Your body is loosening joints, building blood volume, and rehearsing contractions. Practically speaking, this is the time to handle logistics: install the car seat, pre-register at the hospital, stock your freezer with meals, and make a plan for getting to the hospital at any hour.
Babies born at 35 weeks generally do well, but those born even two weeks later, at 37 weeks, have meaningfully fewer complications. Every day your baby stays put helps. Rest when you can, eat well, and pay attention to your body’s signals.