Trouble Sleeping Already? Pregnancy Insomnia Explained
If you’re wondering when does insomnia start in pregnancy — you’re not alone. Trouble sleeping is one of the most common pregnancy symptoms, affecting an estimated 75% of pregnant women at some point. And pregnancy insomnia doesn’t always wait until the third trimester. For many mamas, sleepless nights begin much earlier than expected.
You’ve already heard what postpartum sleeping will be like from your friends. You won’t get a wink of it once your baby arrives, they tell you. While they’re mostly joking (mostly!), the truth is that pregnancy insomnia can show up long before your little one arrives. We’re here to walk you through what it looks like, why it happens, and what you can do to get some much-deserved rest.
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What Are the Signs of Pregnancy Insomnia?
Pregnancy insomnia can show up differently for every mama. Here are the most common signs to look out for:
- Difficulty falling asleep — You’re exhausted, but your body and mind just won’t switch off.
- Waking frequently during the night — You fall asleep fine, but wake up multiple times and struggle to drift back off.
- Waking up earlier than you’d like — You’re up hours before your alarm with no chance of going back to sleep.
- Feeling unrefreshed in the morning — Even after a full night in bed, you wake up feeling drained.
- Daytime fatigue and irritability — Poor sleep follows you into the day, affecting your mood and patience.
- Brain fog — Difficulty concentrating, forgetfulness, or feeling mentally sluggish.
- Slower reflexes — Your reaction time feels off due to ongoing sleep deprivation.
If you’re prone to insomnia already, you may have a few techniques that usually work for you. However, pregnancy insomnia brings with it entirely new triggers and often requires a different approach — so even experienced poor sleepers can find themselves caught off guard when insomnia starts in pregnancy.
When Does Insomnia Start in Pregnancy?
So, when does insomnia start in pregnancy? The honest answer is that pregnancy insomnia can begin at any stage. There’s no single timeline, and every pregnancy is different. That said, here’s a breakdown of what to expect trimester by trimester.
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First Trimester (Weeks 1–12)
Around 25% of expectant mamas experience insomnia during the first trimester. First trimester insomnia in pregnancy is often triggered by hormonal surges — particularly the increase in human chorionic gonadotropin (hCG) — as well as nausea, frequent urination, and anxiety about the pregnancy itself. These disruptions can begin within just a couple of weeks of getting pregnant, which often catches mamas by surprise.
Second Trimester (Weeks 13–27)
Many women find some relief in the second trimester as nausea eases and energy returns. But pregnancy insomnia doesn’t disappear entirely. As your belly grows, finding a comfortable sleep position takes more effort, and heartburn often begins to make an unwelcome appearance at bedtime.
Third Trimester (Weeks 28–40)
The third trimester is when pregnancy insomnia tends to peak. Around 80% of women report sleep problems being common by the time they reach week 28. A growing bump, back pain, increased bathroom trips, baby movement, and restless legs all combine to make truly restful sleep feel elusive.
While insomnia in pregnancy can occur early on, it’s more likely you’ll experience it as you get deeper into your pregnancy. Ultimately, it’s important to remember that sleep issues are a completely normal part of the journey — not a sign that anything is wrong.
Does Every Pregnant Woman Get Insomnia?
Not every pregnant woman is affected by pregnancy insomnia — but most will deal with some form of sleep disturbance at some point. Studies suggest around three in four pregnant women are affected. If you’re one of them, it doesn’t mean something is wrong with you or your pregnancy. It’s your body responding to an enormous amount of physical and hormonal change.
Women who already experience insomnia before pregnancy may find it intensifies during pregnancy. If that sounds like you, it’s worth mentioning to your healthcare provider early so you can have a management plan ready before symptoms escalate.
Why Do Pregnant Women Get Insomnia?
The causes of insomnia during pregnancy vary as much as the specific effects it has on your sleep. Here are the most common reasons expectant mamas have difficulty sleeping:
Hormonal Changes
You may feel like you’re on a hormonal rollercoaster when you’re pregnant — because you are. Surges in hCG, progesterone, and estrogen can interfere with your natural sleep cycle from the very start of pregnancy and continue throughout all three trimesters.
Increased Stress and Anxiety
Prioritizing self-care can be hard when you’re pregnant. The lifestyle changes that come with pregnancy — such as decreased mobility and shifting routines — can feel overwhelming. Around 70% of expectant mamas report symptoms of stress and anxiety at some point during their pregnancy, and a racing mind at bedtime is one of the most common barriers to sleep.
Heartburn
Heartburn affects between 17% and 45% of mamas-to-be, and it can keep you awake at night. Lying down makes it worse, which is why it tends to become a more disruptive sleep issue as pregnancy progresses.
A Growing Belly
As an expectant mama, you love your baby bump with all your heart — but let’s be honest, a larger belly makes it genuinely difficult to fall or stay asleep. That’s especially true if you’re a front or back sleeper who needs to adjust their whole sleep setup.
Needing to Pee More Often
Pregnancy insomnia may have more to do with your bladder than your sleeping position. Frequent nighttime trips to the bathroom can start within a couple of weeks of getting pregnant, making this one of the earliest causes of pregnancy insomnia.
Baby Movement
Feeling your little one kick and move around is one of the truest joys of being an expectant mama — except when you’re trying to sleep. Babies are often most active at night, which can pull even the most exhausted mama wide awake.
Restless Leg Syndrome (RLS)
Between 10% and 34% of pregnant women experience RLS — an uncomfortable, hard-to-ignore urge to move or kick your legs. It tends to be worst at night and can make it nearly impossible to settle into sleep.
Nausea
Morning sickness doesn’t always stick to mornings. Those emergency trips to the bathroom can happen at any time of night, causing real disruption to your sleep hygiene.
Back Pain
Between 50% and 80% of expectant mamas experience back pain at some point before delivery. Carrying the extra weight of a growing baby puts strain on your spine, and that discomfort doesn’t always switch off when you lie down.
Increased Heart Rate and Metabolism
Heart rate changes are normal during pregnancy — research shows the average increases from 79.3 BPM at 10 weeks to 86.9 BPM at 40 weeks. Add the stress associated with sleep deprivation and you have a recipe for more tossing and turning.
Snoring and Sleep Apnea
Obstructive sleep apnea (OSA) affects up to 20% of pregnant women with increased body mass, causing interrupted breathing during sleep that leads to awakenings. Add snoring to the mix — yours or your partner’s — and regular sleep can feel very hard to come by.
Tips for Getting More Sleep During Pregnancy
The following tips — covering lifestyle changes, sleep hygiene, and stress management — are designed to help you get more sleep and better sleep during pregnancy.
1. Create a Consistent Sleep Schedule
Maintaining a regular sleep schedule is one of the most fundamental approaches to managing insomnia during pregnancy. Set consistent bedtimes and wake-up times to regulate your body’s circadian rhythm. Even on weekends, try to stick to your schedule — your body will thank you for it.
2. SLEEP ON YOUR LEFT SIDE
Your baby bump may make it difficult to sleep in your usual position — sleeping on your front is often a no-go, and sleeping on your back puts pressure on your internal organs and spine. Sleeping on your left side is widely recommended: it supports healthy blood flow to your baby, reduces back pressure, and helps stomach acids flow more efficiently — lowering the chance of heartburn keeping you awake. Don’t worry if you wake up in a different position. It’s always better to get restorative sleep than to stress about your exact position.
3. USE A PREGNANCY PILLOW
Pregnancy pillows are designed to support your legs and baby bump while you sleep, helping you stay comfortable on your side. They’re also great for general rest — reading, watching TV, or just taking the weight off your back. If you don’t have one yet, an extra-large regular pillow works well as a substitute.
4. IMPROVE YOUR SLEEP ENVIRONMENT
Make your bedroom a genuine haven. Dim the lights as you prepare for sleep, block out light completely once you’re in bed, and minimize exposure to electronic devices. A calm, dark, and peaceful environment can significantly improve your sleep quality.
5. COOL DOWN YOUR ROOM
The combination of hormonal changes and increased metabolic activity during pregnancy can elevate your body temperature. Lowering your bedroom temperature to ideally between 65 and 70°F gives your body the cool environment it needs to fall and stay asleep more easily.
6. Avoid Stimulants in the Evening
Late-night snacks, coffee, tea, and your cell phone all stimulate your brain and make it harder to switch off. Cutting these out in the hours before bed removes some of the most common sleep disruptors. If you need a snack, keep it light and bland.
7. Exercise Regularly — But Not Right Before Bed
Gentle exercise is one of the most effective natural remedies for pregnancy insomnia. Aim for 150 minutes of moderate activity per week — walking, swimming, or prenatal aerobics all count. Don’t be afraid to break it up: five or ten minutes at a time is genuinely better than nothing. Just avoid vigorous exercise in the two hours before bedtime, as it can be stimulating rather than settling.
8. Wind Down with Relaxation Techniques
Unwinding before bed is more important than ever now that you’re a mama-to-be. Gentle yoga, meditation, or reading a book in dim light can help calm your mind and prepare your body for sleep. Building a consistent wind-down routine signals to your nervous system that it’s time to rest.
9. Practice Mindfulness Meditation
Multiple studies show that meditation is effective for dealing with insomnia during pregnancy. Mindfulness meditation — where you focus your attention on the present moment rather than dwelling on the past or worrying about the future — is particularly helpful. Given that stress is one of the leading causes of pregnancy insomnia, this practice can make a real difference to both the quality and quantity of your sleep.
10. TALK TO YOUR HEALTHCARE PROVIDER
If pregnancy insomnia is significantly affecting your wellbeing, please don’t suffer in silence. Your doctor or midwife can help identify any underlying causes and advise on safe options. Always consult your provider before taking any supplements — including melatonin or magnesium — as pregnancy changes the way your body processes them.
For more in-depth support, our Restful Sleep in Motherhood guide offers comprehensive techniques for achieving deeper, more restorative sleep — both during pregnancy and in the postpartum period. Our 5 tips for better sleep is also a helpful quick read if you want somewhere to start today.
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- Blue light from screens suppresses melatonin production by up to 50%, making it harder to fall asleep and reducing sleep quality even after you do.
- Charge your phone outside the bedroom — out of reach = out of mind.
- No doom-scrolling after your device-down time. Social media is designed to be alerting — your brain simply cannot wind down in that state.
- Replace the scroll with something analog: a few pages of a book, a skincare ritual, or a warm drink.
- Caffeine has a half-life of 5–7 hours — that 2pm coffee is still half-present at 9pm. Set a hard cutoff at 1–2pm.
- Watch hidden sources: chocolate, some teas, energy drinks, and some pain relievers all contain caffeine.
- If breastfeeding, keep caffeine under 200mg/day and time feeds 1–2 hours after caffeine when possible.
- Even 20 minutes of gentle movement during the day significantly improves that night's sleep. A walk counts.
- Keep naps to 20–30 minutes and before 3pm. Longer or later naps fragment nighttime sleep.
- Morning light exposure helps regulate your circadian rhythm — try to get outside briefly before 10am.
- Alcohol may help you fall asleep but it fragments REM sleep in the second half of the night. If you drink, finish 3+ hours before bed.
- Heavy meals within 2–3 hours of bedtime can disrupt sleep. A small protein-rich snack is fine if hungry.
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Created with The Matrescence · Developed with Lauren Hays, PMHNP