Pregnancy Week 40: Full-Term Pregnancy
Pregnancy week 40 marks the typical end of a full-term pregnancy. At this stage, your baby has completed the major stages of development and is ready to be born.
Many babies arrive close to their due date, although it is completely normal for labor to begin slightly earlier or later. Every pregnancy progresses at its own pace, and healthcare providers usually monitor both the mother and baby carefully during these final days.
During this stage, your baby may still move regularly throughout the day. Movements may feel slower or more like stretching and shifting because the baby now has less space inside the uterus.
For many parents, week 40 is filled with excitement and anticipation as they prepare to meet their baby.
Baby Development at Week 40
At forty weeks pregnant, your baby is typically about the size of a small watermelon and continues gaining small amounts of weight during the final days of pregnancy.
Your baby’s organs are fully developed and ready to function outside the womb. The lungs, brain, digestive system, and other major organs are prepared for life after birth.
Your baby’s brain continues to develop rapidly and will keep growing after birth as your baby begins interacting with the world.
Your baby’s body has also developed a healthy layer of fat beneath the skin. This fat helps regulate body temperature and supports healthy growth during the early weeks of life.
Most babies are positioned head-down in preparation for delivery. This position helps the baby move through the birth canal during labor.
Although the baby is ready to be born, labor may begin naturally at different times for different pregnancies.
Common Symptoms During Week 40
Common experiences during week 40 include:
Pelvic pressure
Frequent urination
Back discomfort
Fatigue
Braxton Hicks contractions
Pelvic pressure often increases as the baby settles deeper into the pelvis. This position helps prepare the body for labor.
Frequent urination may also occur because the baby’s position places pressure on the bladder.
Braxton Hicks contractions may continue during this stage as the uterus prepares for true labor contractions.
Although these symptoms may feel uncomfortable, they are usually normal signs that your body is preparing for delivery.
Changes in Your Body
Your uterus has reached its maximum size during pregnancy and continues supporting your baby as labor approaches.
As the baby settles into the pelvis, some women may notice increased pressure in the lower abdomen or pelvic area.
Your center of gravity may shift as your baby bump becomes heavier, which can sometimes affect posture and balance.
Your body is also producing increased blood circulation to deliver oxygen and nutrients to your baby through the placenta.
These changes are part of the body’s natural preparation for labor and delivery.
Signs That Labor May Begin
Labor may begin naturally at any time during week 40.
Common early signs of labor may include regular contractions, lower back pressure, or the breaking of the amniotic sac.
True labor contractions usually become stronger, longer, and closer together over time.
If you experience regular contractions or other signs of labor, it is important to contact your healthcare provider or follow your birth plan instructions.
Helpful Tips for Week 40
Rest when your body feels tired
Stay hydrated
Take gentle walks if comfortable
Prepare for labor and delivery
Gentle walking may help support circulation and can sometimes encourage the baby to move into an optimal position for birth.
Taking time to relax and listening to your body can also help reduce stress during the final days of pregnancy.
Track Your Pregnancy Progress
Track your pregnancy week and milestones here:
This tool helps you understand your pregnancy stage, trimester timeline, and estimated due date.
Meeting Your Baby Soon
Week 40 is often the moment many parents have been waiting for throughout the pregnancy journey.
Whether labor begins soon or takes a little longer, your body and baby are preparing for birth.
You can explore helpful guides and resources for new parents here:
Learning about newborn care and early parenting can help you feel more confident as you prepare to welcome your baby into the world.