Letters to Your Baby: Prompts for Every Week of Pregnancy
Forty weeks. Forty letters. One day, you'll read them together. Here are prompts to help you write, one for each week, from the first whisper to the final goodbye to pregnancy.
Of everything you can track during pregnancy, letters to your baby are the most precious. Not the weight. Not the symptoms. Not the fruit comparisons. The words.
Imagine your child at eighteen, opening a book and reading letters you wrote when they were the size of a poppy seed. A raspberry. A mango. Imagine them hearing your voice, your real voice, not the polished-parent version, across all those years.
That's what weekly letters give you. A time capsule of love.
But writing every week can be intimidating. So we've put together 40 prompts, one for each week of pregnancy. Use them as springboards. Answer the ones that resonate. Skip the ones that don't. The only rule: be honest.
First Trimester Letters (Weeks 1–13)
The beginning. Everything is new and fragile and secret.
Week 1–2: We don't know you exist yet. But write anyway. What is your life like right now, before this changes everything?
Week 3: Something is happening. I can't explain it. But I feel… different. Describe the feeling before you knew for sure.
Week 4: Two lines. Two pink lines. Write about the moment you found out. Who was there? What time was it? What did you do next?
Week 5: You're the size of a poppy seed. So small. But already, I'm thinking about you constantly. What am I thinking about most?
Week 6: I saw your heartbeat today. A tiny flicker on a screen. I didn't know I could love something so small so much.
Week 7: I'm sick and exhausted and it's strange, because I'm also happier than I've ever been. What contradictions are you holding?
Week 8: We told someone new today. Their face when they heard… write it down so you don't forget.
Week 9: You're growing arms and legs now. Tiny, perfect things. What am I most excited to see you do with them one day?
Week 10: I had a dream about you last night. Tell them about it, even if it was weird. Dreams are honest.
Week 11: I wonder what you'll look like. Whose eyes? Whose smile? Describe the face you imagine.
Week 12: The first trimester is almost done. We made it. What has surprised you the most so far?
Week 13: You're the size of a lemon now. Tart and sweet. Write about the balance you're finding, between who you were and who you're becoming.
Second Trimester Letters (Weeks 14–27)
The golden stretch. You're showing, you're feeling kicks, and the world is starting to believe you.
Week 14: I felt you move. Or maybe it was gas. But I'm choosing to believe it was you. What did it feel like?
Week 15: Your dad/partner felt you kick today. Their face… I'll never forget it. Describe that moment.
Week 16: We've been thinking about names. Here are the ones floating around. Why do we love them?
Week 17: You can hear my voice now. So here's what I want to tell you, directly. No filter.
Week 18: The anatomy scan is coming. I'm nervous. I'm excited. What's on my mind?
Week 19: We know if you're a boy or a girl now. Or we don't. Either way: write about the knowing (or the waiting).
Week 20: Halfway there. Twenty weeks down, twenty to go. What have I learned so far, about pregnancy, about myself, about you?
Week 21: I've been thinking about the world you'll grow up in. It's complicated. Here's what I want you to know about it.
Week 22: What's one thing I want to teach you? Not school things. Life things.
Week 23: You're the size of a mango now. Heavy and sweet. Write about the weight of carrying you, physical and emotional.
Week 24: I had a moment of pure panic today. What if I'm not ready? Write it down. Then write why you actually are.
Week 25: Your nursery is starting to come together. Or maybe it's a corner of our room. Describe the space we're making for you.
Week 26: I've been thinking about my own childhood, the good parts and the hard parts. What do I want you to know about where I came from?
Week 27: The second trimester is ending. This has been the sweetest stretch. What am I most grateful for right now?
Third Trimester Letters (Weeks 28–40)
The waiting room. Everything is heavy and close and real.
Week 28: You're the size of an eggplant now. Big enough that strangers notice. Write about how it feels to be so visibly pregnant.
Week 29: I can feel your personality already. You kick when I eat something sweet. You're still when music plays. What are you already telling me about who you are?
Week 30: Ten weeks left. Or thereabouts. The countdown is real now. What am I most afraid of? What am I most ready for?
Week 31: I had a hard day today. Pregnancy is not always beautiful. Write honestly about the struggle, your baby can handle the truth.
Week 32: Your grandparents are so excited. Here's what I want you to know about them, and the family you're being born into.
Week 33: I've been imagining our first day together. What do I hope it looks like? What do I want to say to you first?
Week 34: You're running out of room in there. I can feel every stretch. Write about the physical intimacy of this, you and me, sharing a body.
Week 35: I'm packing the hospital bag. It's so real now. What's in the bag? And what am I carrying that won't fit in a bag?
Week 36: I've been thinking about your name, the one we chose. Why did we choose it? What does it mean? What do we hope it carries?
Week 37: You could come any day now. I'm not ready. I've never been more ready. Hold both truths.
Week 38: What will I miss about being pregnant? The kicks. The secret smiles from strangers. You, safe inside. Write a goodbye to this chapter.
Week 39: This is likely my last letter before we meet. What do I want you to know, above everything else?
Week 40: You're here. Or almost here. Either way, this is the end of the beginning. Write the last letter. Make it count.
How to Keep Going (When You're Exhausted)
Forty weeks is a long time. You'll miss some. That's okay. Here's what helps:
- Keep it short. One paragraph counts. One sentence counts. Three words: "I love you" is a complete letter.
- Pick a day. Write every Sunday morning, or every Friday evening. Attach it to something you already do.
- Don't edit. These aren't for publication. They're for your child. Typos are proof a real human wrote them.
- Include your partner. Some weeks, let them write. Their voice matters just as much.
A beautiful place to write these letters
Little Steps has a dedicated "Letters to Baby" section in every weekly check-in. At the end of your pregnancy, all 40 letters become part of your printable PDF keepsake book. Free to start.
Start Writing Letters →