Third trimester · 42 weeks pregnant
Week 42: post-term
Most care providers recommend birth by now.
From 42 weeks and 0 days a pregnancy is post-term. The placenta may be less efficient and amniotic fluid decreases, so most guidelines recommend induction by this point with close monitoring if you choose to wait.
Size and weight
About the size of
a watermelon
Length
51.7 cm
Weight
3.7 kg
Averages from standard growth charts. Measured crown to rump until week 20 and head to heel afterwards.
How your baby is developing
- The baby is larger and may have dry, peeling skin and long nails.
- Amniotic fluid volume falls and the placenta may function less well.
- Monitoring checks the heart rate, fluid and movements closely.
- Your newborn journey starts the moment your baby arrives.
How you may feel
- Exhaustion
- Anxiety
- Swelling
- Pelvic pressure
- Labour signs
If you are waiting, monitoring is usually at least twice a week. Discuss the plan with your care team and ask every question you have.
What's next
Tests and appointments
- Induction is usually scheduled by 42 weeks.
- If you decline, close monitoring with CTG and fluid checks is arranged.
What to do this week
- Write down your questions for the induction discussion.
- Pack extra snacks and entertainment; induction can take a day or two.
- This calendar ends here. Our newborn guide picks up from birth.
Call your doctor or maternity hospital if
- Your baby is moving less than usual, or the pattern has changed
- Vaginal bleeding, or your waters break, especially if the fluid is green or brown
- A severe headache, vision changes, pain under the right ribs, or sudden swelling of your face and hands
- Regular painful tightenings before 37 weeks, or severe itching of your palms and soles
If something feels wrong, trust yourself and call 103 or your maternity hospital. You will never be wasting anyone's time.
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