If you’re pregnant and struggling to sleep, you are very much not alone — and no, it isn’t just “practice” for the sleepless nights ahead with a newborn, as well-meaning people love to say. Sleep disruption in pregnancy is a real, physiologically-driven problem, and for a meaningful number of women it crosses the line from mild discomfort into genuine insomnia that deserves proper treatment.
How common is it?
Sleep problems during pregnancy are the norm rather than the exception — research shows that between 66% and 97% of women report sleep problems by the third trimester. That’s a striking range, but even at the low end, it means the vast majority of pregnant women are dealing with some degree of disrupted sleep.
Why does pregnancy disrupt sleep so much?
The causes shift across the three trimesters, which is part of why sleep problems in pregnancy can feel so unpredictable.
First trimester
Rising progesterone levels increase daytime sleepiness but can paradoxically disrupt night-time sleep continuity. Nausea and more frequent urination (as the growing uterus presses on the bladder) also interrupt sleep.
Second trimester
Often the calmest period for sleep, though this is also when some women first develop restless legs syndrome or notice the beginnings of physical discomfort.
Third trimester
This is when sleep tends to deteriorate most. Physical discomfort, frequent trips to the bathroom, heartburn, shortness of breath, and the baby’s own movement all interrupt sleep — layered on top of a growing sense of anticipation (or anxiety) about labour and the transition to parenthood.
When does normal pregnancy sleep disruption become insomnia?
Some disrupted sleep is an expected part of pregnancy. But it becomes worth addressing as insomnia specifically when:
- You have real difficulty falling asleep or getting back to sleep, beyond just physical discomfort
- You lie awake with racing thoughts even when you’re physically comfortable
- The sleep disruption is significantly affecting your mood, energy or ability to function during the day
- You start to dread bedtime because you expect not to sleep well
This last point matters more than it might seem — once anticipatory anxiety about sleep sets in, it becomes a self-reinforcing problem that persists even after the original physical cause (nausea, back pain, an early pregnancy symptom) has eased.
Why treating it matters — beyond just feeling tired
Poor sleep in pregnancy isn’t only about daytime fatigue. Research has linked untreated sleep disturbance during pregnancy to a higher risk of depressive symptoms, both antenatally and postpartum. One randomised controlled trial found that women who received a structured CBT-I intervention during pregnancy had lower levels of depressive symptoms at six months postpartum than those who didn’t — suggesting the benefits of treating sleep properly extend well beyond the pregnancy itself.
Is it safe to treat insomnia during pregnancy?
This is usually the first question, and it’s an important one. Most sleep medications are not well studied for safety in pregnancy, and many are best avoided, particularly in the first and third trimesters. This is exactly why CBT-I — Cognitive Behavioural Therapy for Insomnia — matters so much for pregnant women: it’s a fully non-pharmacological treatment, safe throughout pregnancy, with no risk to the baby.
What does the evidence say about CBT-I in pregnancy?
CBT-I remains an effective, non-drug treatment for sleep disturbance in both pregnancy and the postpartum period. Studies have found it improves sleep and eases insomnia symptoms for pregnant women, while also helping with related fatigue, anxiety and low mood. Current clinical guidance points to non-pharmacological approaches as the preferred first-line option, especially for new-onset sleep problems during pregnancy.
How CBT-I is adapted for pregnancy
Treatment during pregnancy follows the same evidence-based principles as standard CBT-I, with some practical adjustments:
- Realistic expectations — some sleep disruption (frequent bathroom trips, physical discomfort) is simply part of pregnancy and isn’t something to “fix,” so treatment focuses on what actually is changeable: racing thoughts, sleep-related anxiety, and unhelpful habits that compound the physical challenges.
- Flexible sleep scheduling — adapted to account for genuine physical needs rather than rigid restriction.
- Addressing anticipatory anxiety — tackling the dread of another bad night before it becomes entrenched.
- Practical wind-down strategies — tailored to physical comfort needs at each stage of pregnancy.
The bottom line
Disrupted sleep in pregnancy is extremely common, but when it tips into genuine insomnia — racing thoughts, dread of bedtime, real difficulty functioning — it’s worth treating properly rather than assuming nothing can be done until after the baby arrives. CBT-I offers a safe, effective, drug-free option that can make a real difference, both now and in the months after birth.
Frequently asked questions
Is it normal to have insomnia during pregnancy?
Yes — sleep problems affect the large majority of pregnant women, especially by the third trimester, when up to 97% report disrupted sleep. It becomes worth treating as insomnia specifically when it involves real difficulty falling or staying asleep, not just physical discomfort.
Is CBT-I safe during pregnancy?
Yes. CBT-I is entirely non-pharmacological, with no medication involved, making it a safe first-line option throughout pregnancy, unlike most sleep medications which are best avoided, especially in the first and third trimesters.
Can poor sleep in pregnancy affect my mood after the baby is born?
Research suggests it can — one study found that women who received CBT-I during pregnancy had lower depressive symptoms six months postpartum compared to those who didn’t, highlighting why treating sleep properly during pregnancy matters beyond just feeling more rested.
When should I seek help for pregnancy insomnia rather than waiting it out?
If you’re lying awake with racing thoughts even when physically comfortable, dreading bedtime, or finding your daytime mood and functioning significantly affected, it’s worth seeking proper treatment rather than assuming it will resolve after birth.