40 Weeks Pregnant: The Finish Line, and Your Baby's First Breath

Last week, your baby reached full term and may have been getting ready to call the day. This week, you reach the finish line. Week forty. Your due date. The moment all of this has been quietly building toward.

Welcome to week forty. Everything you have read about over these past nine months, every cell, every heartbeat, every tiny fingernail, is about to become a real, warm, breathing baby in your arms. Let me show you what awaits.

Your due date is here, but it is not a deadline

So here it is. The day circled on the calendar all these months. Your due date.

But here is something every mother deserves to know. Your due date was only ever an estimate, a best guess at the middle of a perfectly normal range, not a hard deadline. In fact, only about one in twenty babies actually arrives on their due date. The vast majority come in the couple of weeks either side, and first babies especially often like to take their time.

So if today arrives with no sign of your baby, please do not feel disheartened, and please do not feel that anything is wrong. You have not failed at anything. Your baby is simply not quite ready to make their entrance, and that is completely normal and usually perfectly healthy. Your midwife will keep a close and caring eye on you both from here. Your baby is coming. Just on their own perfect schedule.

The most dramatic moment of their life

Whenever your baby does decide to arrive, they will go through the single most dramatic transformation of their entire life, and it happens in just a few minutes.

For nine months, your baby's lungs have been filled with fluid, and every breath of oxygen they needed came from you, through the cord. Then your baby is born, and everything changes at once. With their very first breath, their lungs fill with air for the first time ever, and the fluid inside them clears away. And in those same few moments, something extraordinary happens in their heart. The little doorways that let blood skip past their unused lungs in the womb swing closed, and their whole circulation reroutes itself, sending blood rushing to those lungs to gather oxygen for the very first time.

In the space of a few breaths, your baby switches from living in water to breathing air, a change so total and so perfectly timed that it will never be matched again as long as they live. And that first thin, furious cry? That is the sound of your baby breathing, all on their own. The sound you have waited the whole pregnancy to hear.

And then, you meet

And then comes the moment all of this has been for.

Your baby, lifted up and laid on your chest, warm and real. And everything you have read about over these past months comes alive at once, right there in your arms. Because your baby already knows you. They will turn toward the sound of your voice, the one they have heard from the very inside. They will calm at the familiar beat of your heart. They will catch your scent and root toward you, searching for the breast, exactly as they practised. And when they finally open their eyes and find your face, the very first face they look for will be yours.

To your baby, you are not a stranger. After everything, from that single cell all those weeks ago, you are the one thing they have always known. You are home. You always were.

How big is my baby at 40 weeks?

Around fifty-one centimetres now, head to heel, and roughly three and a half kilograms, give or take, because healthy babies arrive in all sorts of wonderful shapes and sizes.

Fully grown. Completely ready. And so very nearly in your arms.

What is happening in my body?

You have reached the finish line of pregnancy, and you have likely never felt so ready, or so impatient, in your life.

Watch closely now for the signs of labour your midwife has talked through with you, and trust that you will know when it is time. And if you go past your due date, try not to worry. Your midwife will talk you through how they would like to keep an eye on you and your baby, and what your options are if your baby needs a little encouragement to arrive. Rest, eat, stay hydrated, and gather your strength. The next time everything changes, it will be for real. And it will be worth every single second of this wait.

From Courtney. If you have been with me since those very first weeks, look how far you have both come. From a tiny cluster of cells smaller than a poppy seed, to a whole, complete, breathing baby, ready to meet you. I have loved walking these forty weeks beside you. And now, whether your baby arrives today or makes you wait a little longer yet, I want you to hear this. You have done something miraculous. You grew a person. A heart, a brain, ten fingers, ten toes, a mind, a whole entire human being, made inside your own body. Soon you will hold them, and they will look up at you and know you instantly, as the voice, the heartbeat, the warmth they have loved their whole existence. You are their whole world, mama. You have been all along. Now go and meet them. I am so proud of you.

The one thing to do this week

This week, the one thing to do is to trust. Trust your body, which has grown and carried and readied this baby for nine extraordinary months. Trust your baby, who knows how to be born and how to find you. And trust yourself, because you are so much more ready for this than you feel.

Rest while you can. Keep your bag by the door and your phone charged. And in the quiet moments, remind yourself of the simple, staggering truth of it all. You are about to meet the person you have been growing this whole time. You can do this, mama. You were made for it.

A note for the weeks ahead

If you are reading this with your baby finally in your arms, then congratulations, mama. You did it. Thank you for letting me walk every one of these forty weeks with you. And now your loveliest chapter begins. When you feel ready, switch over to the baby tracker in the Mama Years app, to keep a gentle eye on feeds, nappies, and sleep, and to find guidance and learning matched to your baby as they grow.

And if you are still waiting, please know I have not left you. The next little stretch can feel like the longest of the whole pregnancy, so week forty-one is just for you. The mother who is still carrying, still waiting, and so very ready. I will see you there.

Written by Courtney Garland, NICU nurse, lactation consultant and mother of four, and founder of The Mama Years. This is here to inform and reassure you. It is not a substitute for medical advice, so always follow the guidance of your own doctor or midwife.

The Mama Years. 2026.

References

Cleveland Clinic. (2023). Fetal development: Stages of growth. https://my.clevelandclinic.org/health/articles/7247-fetal-development-stages-of-growth

Hillman, N. H., Kallapur, S. G., & Jobe, A. H. (2012). Physiology of transition from intrauterine to extrauterine life. Clinics in Perinatology, 39(4), 769-783. https://doi.org/10.1016/j.clp.2012.09.009

Mayo Clinic. (2025). Fetal development: The third trimester. https://www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/in-depth/fetal-development/art-20045997

Merck Manual. (2024). Stages of fetal development (Consumer Version). https://www.merckmanuals.com/home/women-s-health-issues/normal-pregnancy/stages-of-fetal-development

# Overdue Week 41

# 41 Weeks Pregnant: For the Mother Who Is Still Waiting

You are still here.

Your due date has come and gone, the calendar has flipped right past it, and you are, against all the plans and all the guesses, still pregnant. If you are reading this feeling enormous, exhausted, impatient, and just a little bit fed up with the whole thing, then this week is for you. Not so much for your baby, who is doing perfectly well in there, but for you, mama. Because the overdue wait is one of the hardest stretches of all, and you deserve some tenderness through it.

Welcome to week forty-one. Let me sit with you a while.

First, you are not failing. You are right on time

Let me say this clearly, because you may need to hear it. There is nothing wrong with you, and there is nothing wrong with your baby.

Going past your due date is incredibly common, especially with a first baby. Remember, as we talked about on your due date, that date was only ever an estimate, a middle point in a perfectly normal range that stretches well into the next couple of weeks. The vast majority of babies who have not arrived by now will come of their own accord very soon, and almost all the rest are safely on their way by the end of next week.

So please, set down any feeling that your body is failing, or that you have done something wrong, or that you are somehow behind. You are not late. You are not broken. You and your baby are simply finishing this in your own time, exactly as so many mothers and babies do.

How you might be feeling

If you are finding these extra days genuinely hard, you are in very good company.

Physically, you are probably worn right out. Sleep is near impossible, everything aches, you are carrying a lot, and your body feels stretched to its absolute limit. And emotionally, this stretch can be even harder. There is the crushing anticlimax of watching your due date pass with nothing to show for it. The constant, low hum of is everything okay. The impatience, the restlessness, the bursting-into-tears-over-nothing tiredness. The feeling that you have been pregnant forever and might just stay this way for the rest of your life.

All of it is normal. All of it is allowed. You do not have to be glowing and patient and grateful right now. You can be completely over it, and still be a wonderful mother to the baby you are about to meet. Both things are true at once.

And about those messages

Let us talk about your phone for a moment, because it is probably driving you to distraction.

By now, you are likely fielding a steady stream of well-meaning messages. Still here?\! Any news?\! Has that baby arrived yet?\! Have you tried \[insert old wives' tale here\]? Every single one is sent with love. And every single one can feel like another little bit of pressure piled onto a mountain you are already carrying.

So here is your permission slip. You do not owe anyone an update. You can mute the group chat. You can hand your phone to your partner and let them field it all. You can set a cheeky auto-reply that simply says still cooking, will let you know. Protect your peace this week, fiercely. Your only job right now is to rest and wait, not to keep the whole world posted.

Your baby is safe, and you are being watched over

While all your focus is, understandably, on when this baby will finally arrive, here is the reassuring truth underneath it all. Your baby is doing just fine in there, snug and content, with nothing to do but wait, just like you.

From around now, your midwife or doctor will keep an even closer eye on you both, making sure your baby stays happy and well as you go past your due date. They may also talk to you about gently helping things along, perhaps with a membrane sweep, or by making a plan for induction if your baby needs a little encouragement to come.

And if induction is the path for you, it can really help to know this ahead of time. It does not always happen quickly. Sometimes it takes a while to get going, sometimes it takes more than one try, and you may find yourself waiting on the ward far longer than you ever hoped. That is normal, it does not mean anything is wrong, and it is completely okay to find it hard. There is no single right answer through any of this, so ask all your questions, share how you are truly feeling, and lean on their care. This is exactly what they are there for.

One thing that can help you feel calmer in the waiting is simply staying tuned in to your baby's movements. Your baby should keep moving just as much as ever, right up to and through labour. If you ever feel their pattern change, call your midwife straight away, day or night, without a second thought. And if it reassures you to keep track, the free kick tracker in the Mama Years app is there for you. Trust your instincts. You know your baby.

How big is my baby at 41 weeks?

Much the same as last week, simply a little bigger. Your baby is around fifty-one to fifty-two centimetres, head to heel, and may now weigh anywhere from three and a half kilograms upward, with some extra padding, longer nails, and perhaps a fuller head of hair for the wait.

Fully grown, completely ready, and quite literally just biding their time until the big day, which truly cannot be far away now.

From Courtney. Let me tell you about my first baby, because I have lived this exact wait. I went past my due date, and then I was induced, and I will be honest with you, it was one of the hardest stretches of my life. The induction did not work, not the first time and not the second. Then a busy weekend on the ward meant yet more waiting still. Day after day for 4 days, I was stuck in a hospital room, unable to even go home, without my partner beside me through the long nights, sobbing into a scratchy hospital pillow, certain I could not do it a moment longer, just desperate to finally meet my baby. So if you are in the thick of it right now, please know I am not offering you tidy words from the safe side of it. I have cried those exact tears. And here is what I most want you to hold onto. It ended. My baby came. And the moment he was placed on my chest, every single long, hard hour of that wait simply melted away, as though it had never happened. Yours will melt away too, mama. I promise you it will. Hold on. You are so close.

The one thing to do this week

This week, your one job is to be kind to yourself, and to get through these days as gently as you can.

So fill them with small comforts. A good film and a blanket on the sofa. A slow walk somewhere that makes you feel calm. A favourite meal, a long bath, a phone call with someone who makes you laugh rather than asks for updates. A nap whenever your body will allow one. None of it will bring your baby any faster, and that is not the point. The point is to be tender with yourself through a hard, impatient stretch, and to save your strength for what is coming.

You have done the most enormous thing, growing this baby all the way here. Let yourself rest now, mama. The waiting is almost over.

Coming up in week forty-two

If your baby has arrived since last we spoke, then oh, congratulations, mama. I am thrilled for you, and I hope you are tucked up somewhere cosy, drinking them in. When you surface for air, you can switch over to the baby tracker in the Mama Years app, to keep track of feeds, nappies, and those topsy-turvy newborn sleeps, with gentle guidance and learning ready whenever you need it.

And if you are still waiting, then I will be right here for you next week too. Week forty-two is the very last stop on this long road, and by then, your baby truly is about to arrive, one way or another. Hang in there. I will see you at the finish line.

Written by Courtney Garland, NICU nurse, lactation consultant and mother of four, and founder of The Mama Years. This is here to inform and reassure you. It is not a substitute for medical advice, so always follow the guidance of your own doctor or midwife.

The Mama Years. 2026.

References

American College of Obstetricians and Gynecologists. (n.d.). When pregnancy goes past your due date. https://www.acog.org/womens-health/faqs/when-pregnancy-goes-past-your-due-date

Mayo Clinic. (2023). Overdue pregnancy: What to do when baby's overdue. https://www.mayoclinic.org/healthy-lifestyle/labor-and-delivery/in-depth/overdue-pregnancy/art-20048287

NHS. (2023). If your baby is overdue. https://www.nhs.uk/pregnancy/labour-and-birth/signs-of-labour/if-your-baby-is-overdue/

# Overdue Week 42

# 42 Weeks Pregnant: The End of the Road, and the Start of Everything

Here you are. The very last week. Week forty-two.

If you are still pregnant as you read this, then you have reached the absolute final stretch of this long, extraordinary road, and I want you to know something straight away. It is almost over. Truly. Whatever happens from here, your baby is about to arrive. This is the end of the road, mama, and the start of absolutely everything.

Welcome to week forty-two. Let me walk this last little way with you.

This really is the finish line

By now, you can hold on to one certain, wonderful fact. Your baby will be here very, very soon.

Almost no pregnancies carry on past this point. By forty-two weeks, you and your midwife or doctor will have a clear plan in place to make sure your baby arrives safely, whether that means waiting on the last little flicker of natural labour, or with the help of an induction already underway. Either way, the finish line is no longer somewhere off in the distance. You are standing right on it.

Within days, perhaps even hours, the bump you have carried all this time will become a warm, wriggling, crying, breathing baby in your arms. After everything, the waiting really is about to end.

You made it through the hardest part

Before anything else, I want to acknowledge you.

These last days and weeks, stretched past your due date, may well have been the very hardest of your entire pregnancy. The discomfort. The bone-deep impatience. The emotional waves, the not-knowing, perhaps a long and trying induction on top of it all. It asks so much of a woman, this final wait, far more than anyone really tells you.

And you have done it. You have carried your baby all the way to the very end, through every bit of it, right to this last threshold. Whatever this wait has taken out of you, look at what you have done. You are about to be rewarded with the very thing you have longed for above all else.

Your baby is nearly in your arms

And oh, what a thing it will be.

Very soon now, everything you have read about across these forty-two weeks will come alive all at once. That first thin, furious cry. The warm, impossible weight of your baby laid on your chest. The way they will turn toward your voice, breathe in your scent, and settle, because they already know you are home. Every single thing you have learned about your baby is about to stop being words on a screen and become a real little person, looking up at you.

Hold on to that. It is no longer a faraway dream. It is days, maybe hours, away.

How big is my baby at 42 weeks?

Your baby is fully grown and ready, much as they have been these past couple of weeks, perhaps with a touch more weight, long little nails, and skin that may be a bit dry or peeling, all completely normal for a baby who has taken their time.

Ripe, ready, and just about to make their grand entrance. The very last measurement before you finally get to weigh them in your own two arms.

From Courtney. If you have walked these forty-two weeks with me, all the way from that very first week when your baby was no more than a possibility, to now, with them about to arrive, then I have to tell you, it has been the great honour of my work to be here for it. Look at everything you have done. You grew a heartbeat, a brain, ten fingers and ten toes, a whole entire person, from almost nothing, inside your own body. And you carried them, through the sickness and the wonder and the aching back and this last endless wait, all the way to the finish line. Whatever kind of birth you are about to have, however your baby comes, you have already done the most extraordinary thing a human body can do. So as you step over this threshold into motherhood, please carry this with you. You are strong enough. You are ready enough. You are already, exactly as you are, everything your baby needs. Now go and meet them, mama. I will be thinking of you. And I could not be prouder.

The one thing to do this week

This week, the only thing left to do is to let go, and let yourself be carried.

You have prepared, you have waited, you have done every bit of the hard work. There is nothing left to organise or control now. So lean fully on the people around you and the team caring for you. Accept every offer of help. Say what you need out loud. And as you go into these final hours, try to trust, in your body, in your baby, and most of all in yourself, that you can do this. Because you can.

The next time the world changes, your baby will be in your arms. Go gently, mama. You are almost home.

A final word, from me to you

And so we reach the end of our forty-two weeks together.

Thank you, truly, for letting me be part of this journey, week after week, wonder after wonder. It has been such a privilege to walk it beside you. But here is the lovely thing. This is not really an ending at all. It is the very first page of a brand new story, the one where you and your baby finally get to meet, and learn each other, and grow together.

And when you are there, in the thick of those first beautiful, bewildering newborn days, with all their feeds and cuddles and three in the morning questions, I will still be right here for you. When your baby arrives, simply switch over to the baby tracker in the Mama Years app. It keeps a gentle eye on feeds, nappies, and sleep, and grows right alongside you, offering the guidance and learning your baby needs exactly when they need it. The Mama Years was made for this whole journey, the one before birth, and every step of the one that comes after.

So go and meet your baby. Take it all in. And come and find me when you are ready, for the next chapter of your years as a mama. With so much love, Courtney.

Written by Courtney Garland, NICU nurse, lactation consultant and mother of four, and founder of The Mama Years. This is here to inform and reassure you. It is not a substitute for medical advice, so always follow the guidance of your own doctor or midwife.

The Mama Years. 2026.

References

American College of Obstetricians and Gynecologists. (n.d.). When pregnancy goes past your due date. https://www.acog.org/womens-health/faqs/when-pregnancy-goes-past-your-due-date

Mayo Clinic. (2023). Overdue pregnancy: What to do when baby's overdue. https://www.mayoclinic.org/healthy-lifestyle/labor-and-delivery/in-depth/overdue-pregnancy/art-20048287

NHS. (2023). If your baby is overdue. https://www.nhs.uk/pregnancy/labour-and-birth/signs-of-labour/if-your-baby-is-overdue/

The Mama Years is written by Courtney Garland, a NICU registered nurse and IBCLC lactation consultant, against the research. When the science is genuinely unsettled, she says so instead of guessing. Nothing here replaces the advice of the clinician looking after you.