Sleep in Pregnancy: Comfortable Positions and Coping With Insomnia
Key message: Sleep often becomes lighter and more interrupted in pregnancy. From 28 weeks, going to sleep on…
Key message: Sleep often becomes lighter and more interrupted in pregnancy. From 28 weeks, going to sleep on your side is recommended; if you wake on your back, simply turn onto your side without panic.
Get urgent help: Seek urgent help for sudden breathlessness, chest pain, fainting, severe headache with visual symptoms, or one swollen painful leg. Contact the maternity team immediately for reduced baby movements. Severe depression, mania, hallucinations or self-harm thoughts need urgent mental-health care.
Why does sleep change?
- Hormonal changes and daytime tiredness.
- Frequent urination, reflux, nausea or nasal congestion.
- Back or pelvic pain and leg cramps.
- Baby movements and difficulty finding a comfortable position.
- Anxiety, low mood, work or family stress.
- Restless legs, snoring or sleep apnoea.
Which position is recommended?
From 28 weeks, NHS guidance recommends going to sleep on the side, either left or right. If you wake on your back, turn onto your side and return to sleep.
The advice concerns the position in which sleep begins; it does not mean you must stay completely still all night.
How can pillows improve comfort?
- Place a pillow between the knees for pelvic and back support.
- Support the bump with a small pillow.
- Raise the head and shoulders for reflux.
- Use a pillow behind the back to make side-lying easier.
- Choose the minimum arrangement that helps rather than buying a specific branded pillow.
What sleep habits help insomnia?
- Keep a regular wake time and use morning daylight.
- Wind down with a calm routine and reduce bright screens before bed.
- Limit caffeine and avoid it later in the day.
- Exercise regularly but not intensely immediately before bed.
- Use the bed for sleep rather than prolonged worrying or work.
- If awake for a long period, get up briefly for a quiet low-light activity and return when sleepy.
How can physical symptoms be treated?
- Review reflux, nausea, pelvic pain, itching and urinary symptoms rather than accepting repeated night waking.
- Avoid large late meals and reduce—but do not eliminate—late-evening fluid if daytime hydration is adequate.
- Leg cramps may improve with gentle calf movement; persistent restless legs can be associated with iron deficiency.
- Loud snoring, choking, witnessed pauses or severe daytime sleepiness needs assessment for sleep apnoea.
Are sleep medicines or herbal products safe?
Do not self-start antihistamines, melatonin, sedatives, herbal remedies or cannabis products in pregnancy. Some medicines are used for selected patients, but the cause, pregnancy stage and next-day effects need review.
Cognitive behavioural therapy for insomnia and treatment of anxiety or depression may provide safer long-term benefit.
When should mental health be considered?
Persistent inability to sleep can be a symptom of anxiety or depression. A reduced need for sleep with unusually high energy, racing thoughts, impulsive behaviour or confusion needs urgent assessment, especially with bipolar history.
Discuss distress early rather than waiting until exhaustion becomes severe.
What about naps and shift work?
A short early-afternoon nap may help, while long late naps can worsen night sleep. Shift work may require an occupational-health plan for fatigue, breaks and safe travel.
Never drive if dangerously sleepy.
Frequently asked questions
Must I sleep only on my left side?
No. Either side is acceptable; choose the more comfortable side.
What if I wake on my back?
Turn onto your side without panic and go back to sleep.
Are pregnancy pillows essential?
No. Ordinary pillows can provide the same support.
Can I take melatonin?
Do not start it without pregnancy-specific medical advice.
Is insomnia harmful to the baby?
Occasional poor sleep is common; persistent severe insomnia deserves treatment for the mother’s health and underlying cause.
Your next step
Mention persistent insomnia, snoring, restless legs, pain, reflux or mood symptoms at antenatal care. Reduced movements or emergency symptoms follow the maternity pathway, not routine sleep advice.
Medical and content review: Dr Mohamed Abdelghany, Obstetrics & Gynecology Specialist, MRCOG (UK), MSc Obstetrics & Gynecology – Kasr Al-Ainy, Cairo University.
Last reviewed: 23 August 2026.
This information is for general education and does not replace individual medical assessment. Severe, sudden or concerning symptoms should not wait for a routine appointment.
