Trimester Guides June 03, 2026

Third trimester insomnia is a special kind of torture

Emily Carter
Emily Carter, RDN, IBCLC
Registered Dietitian & Lactation Consultant
Third trimester insomnia is a special kind of torture

I wrote this at 3 AM. Not because I wanted to. Because I couldn't sleep. Again.

My third pregnancy (due November 2026) has been the worst for sleep. My hips ache. My bladder is the size of a thimble. And my brain won't shut up — making lists, worrying about labor, wondering if I packed enough onesies.

With my first, I thought insomnia was just preparation for newborn sleep deprivation. Joke's on me: newborn sleep deprivation is different. At least with a newborn, you have a cute baby to stare at. At 38 weeks pregnant, all you have is a giant belly and a phone you shouldn't be looking at.

I've tried everything. No screens before bed (impossible when you can't sleep). Warm baths (helps for 20 minutes). Pregnancy pillows (I have three. I still can't get comfortable). Meditation apps (my mind wanders to grocery lists).

The only thing that's worked is acceptance. When I can't sleep, I get up. I read a boring book. I drink warm milk. I don't stress about the lost sleep, because stressing makes it worse.

My patient "Tessa" had such severe third-trimester insomnia that she asked for medication. Her provider prescribed a low dose of Unisom (doxylamine) — the same ingredient in many morning sickness meds, safe in pregnancy. It didn't solve everything, but it helped her get a few solid hours.

The waiting game of the third trimester is real. You're huge. You're uncomfortable. You're done. And still, the baby isn't ready.

What got me through: counting in weeks, not days. "I only have three more weeks of this" sounds better than "21 more days." I also stopped looking at my phone first thing in the morning — the "you're 38 weeks and 2 days" app notifications just made me angry.

Due date calculator
Due Date Calculator Check your due date, then hide the app. Obsessing won't make it come faster. All data stays in your browser — we never see it.

To anyone else awake at 3 AM, staring at the ceiling: you're not alone. There are millions of us. We're all tired. We're all ready. And someday soon, we'll sleep again. Or we won't — because we'll have a newborn. But at least we'll have a baby to show for it.

This article reflects personal experience. If insomnia is affecting your daily function, talk to your provider about safe options.

— Emily Carter

Medical Disclaimer: This article reflects personal experience and clinical observations. It is not a substitute for professional medical advice. Always consult your healthcare provider for personalized guidance.