38 Weeks Pregnant

38 weeks pregnant: baby head down, labour signs and what to expect

At 38 weeks pregnant, you are very close to birth. The baby is often head down now, and labour can start at any point, although some pregnancies continue for a little longer before delivery begins.

This week follows 37 weeks pregnant and leads into 39 weeks pregnant. If you want to compare dates or due date estimates, use the pregnancy calculator.

Your baby at 38 weeks pregnant

The baby may be around 48-50 cm long and weigh roughly 3 kg, although size estimates vary. The body is rounder, the skin is smoother and the baby is close to the size and maturity needed for life outside the womb.

Many babies are already in a head-down position and can react to light, sound and touch. Movements may feel tighter and more like strong pushes than big rolls because there is much less room.

The lungs, brain and digestive system are still finishing late maturation, but the baby is now considered ready for birth in many care systems. Exact timing still depends on your pregnancy and your provider's guidance.

Your body and symptoms

Pelvic pressure, back pain, tightening contractions, increased discharge and frequent urination are all common now. Some people also notice the mucus plug, a change in bowel habits or a strong sense that birth is getting close.

It can be harder to move around, stand up from a sofa or sleep comfortably. If you have waters breaking, bleeding, regular painful contractions, severe pain or reduced movement later in pregnancy, contact your maternity team promptly.

At this stage, small changes can matter more. When in doubt, call the birth unit or your midwife rather than trying to guess whether symptoms are normal labour or something that needs review.

What to do this week

  • Keep your hospital bag ready and within easy reach.
  • Know the route to hospital or the birth unit and how long it takes.
  • Keep tracking movement and call if it becomes clearly reduced.
  • Review your plan for childcare, transport and the person who will support you.
  • Rest where possible, because birth can arrive soon and energy matters.

Definitions

Head down means the baby is in a vertex position with the head nearest the birth canal.

Mucus plug is the thick mucus that helps seal the cervix during pregnancy and may come away before labour.

Labour signs include regular contractions, waters breaking and other changes that may mean birth is starting.

Frequently asked questions about 38 weeks pregnant

How many months is 38 weeks pregnant?

Thirty-eight weeks pregnant is often described as about 9 months pregnant, but weeks are more precise than months.

What trimester is 38 weeks pregnant?

38 weeks pregnant is in the third trimester.

Is the baby usually head down at 38 weeks pregnant?

Many babies are head down by 38 weeks, and that is the usual position for birth. Your provider can confirm presentation at an appointment if needed.

What are the labour signs at 38 weeks pregnant?

Labour signs can include regular contractions, waters breaking, increasing pelvic pressure, back pain or a change in vaginal discharge. If you are unsure, call for advice.

When should I call my maternity provider at 38 weeks pregnant?

Call promptly for bleeding, fluid leakage, severe pain, reduced movement later in pregnancy, or contractions that are becoming regular and stronger.