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41 Weeks Pregnant: Baby Size, Symptoms and What to Do

Week 41 is in the third trimester, month 9 of pregnancy. Here's how big your baby is, what's developing, what you may feel and what to do this week.

Week 41 · 3rd trimester · month 9
About the size of a jack-o'-lantern pumpkin

Your baby this week

The average baby now weighs around 3 to 4 kg (about 6.6 to 8.8 pounds), and the big growth spurts are over. Babies born after their due date may have dry, peeling skin, which usually settles on its own.

Week 41 is late term by ACOG's definition (41+0 to 41+6). Your care team checks the placenta and amniotic fluid more often now, because risks slowly rise the longer pregnancy continues. Many hospitals offer or schedule induction during this week; the exact timing depends on your health, your baby's and local practice. Babies born after their due date may have dry, peeling skin, which settles on its own. Keep paying attention to movements, and go to labor and delivery right away for any change in movement, bleeding or leaking fluid.

By the numbers

Week 41 covers days 287 to 293 counted from the first day of your last period, which is 100% of a 40-week pregnancy. By date of conception, your baby is about 39 weeks old.

Pregnancy is dated from the first day of your last period, so conception happens around week 2. Your due date is 280 days (40 weeks) from that day, and an early ultrasound may adjust it.

Your body

Feeling impatient is completely understandable. Keep paying attention to movements and call right away if anything changes.

Tests and to-dos this week

Around 41 weeks, your provider will usually discuss extra monitoring and options such as inducing labor. Ask questions until each choice makes sense to you.

No routine test falls in this exact week; your provider schedules your regular checkups.

Signs of labor: when to go in

Labor usually starts with contractions that come at regular intervals and get longer, stronger and closer together; they don't ease when you rest or change position. Your water may break with a gush or a slow trickle, and you may notice a bloody show. Agree with your provider on when to call: many practices use the 5-1-1 rule of thumb (contractions about every 5 minutes, lasting about 1 minute, for 1 hour). Go in right away for bleeding, green or brown fluid, a severe headache, constant pain or fewer movements. A contraction timer helps you track the pattern without doing the math.

Contraction timer

Tips for the third trimester

  • From 28 weeks, go to sleep on your side; if you wake on your back, just roll over.
  • Pack your hospital bag and agree with your provider on when to head in.
  • Call right away, even at night, if your baby moves less or differently.
  • Know the signs of labor: regular, strengthening contractions, your water breaking or a bloody show.

Call your provider or labor and delivery right away if you have:

  • your baby is moving less or differently than usual
  • your water breaks, especially if the fluid is green, brown or smells bad
  • bright red bleeding or constant, severe belly pain
  • a severe headache, vision changes, pain under the ribs or sudden swelling
  • intense itching, especially on the palms and soles

In an emergency, call 911.

Last week and next week

Last week (40): Your baby is full term and short on space, but should keep moving in the usual pattern.

Next week (42): At 42 weeks a pregnancy is considered post-term.

Frequently asked questions

How big is the baby at 41 weeks?

Most babies weigh around 6.6 to 8.8 pounds (3 to 4 kg) by now. Sizes vary a lot, and growth is checked by your care team.

How many months is 41 weeks pregnant?

41 weeks is in month 9 and the third trimester. You're past your due date. Months are approximate; providers count weeks and days.

Is going past 41 weeks risky?

Risks rise gradually after 41 weeks, so you'll be monitored more closely and induction will be discussed. A pregnancy is called post-term from 42 weeks 0 days.

Sources

Last reviewed: November 14, 2026 · Kitpebble editorial team

This page is for general information. It isn't medical advice or a diagnosis and doesn't replace your OB-GYN or midwife. Sizes are rounded averages. Our editorial policy

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