Insomnia and Sleep Problems in Pregnancy

Why sleep breaks down in pregnancy

The NHS gives the shape of it: hormonal changes make you tired, nauseous and emotional early on; later "you may feel tired because of the extra weight you're carrying". And then the mechanical problem: "As your bump gets bigger, it can be difficult to get a good night's sleep. You might find that lying down is uncomfortable or that you need to use the loo a lot."

Tommy's breaks the causes down further, and this list is the useful part of the page because it turns one vague problem into several specific ones:

• Changing hormones, which "can make you feel extra tired" and more emotionally reactive.
• Pain — back, hip and rib pain, plus a growing bump that "can make it more difficult to get comfortable in bed".
• Nausea and heartburn, both of which intensify when you lie down.
• Needing to pee — hormonal changes plus pressure from the baby on your bladder.
• Feeling hot — "hormonal changes and increased blood supply during pregnancy can leave you feeling hot and sweaty".
• Itching, which can be ordinary skin stretching or can be a liver condition that needs urgent assessment (see below).

This matters because "I have insomnia" is not a treatable statement. "I wake at 2am with heartburn" and "I cannot get comfortable because my hips hurt" have different answers.

Treat the cause, not the insomnia

If it is heartburn

Tommy's advice is to "avoid eating for 3 hours before you go to bed". The NHS adds that propping your head and shoulders up in bed "can stop stomach acid coming up while you sleep". NICE's antenatal guideline (NG201) says clinicians should consider a trial of an antacid or alginate for heartburn in pregnancy — so this is worth raising with a pharmacist or midwife rather than enduring.

If it is needing to pee

The NHS suggestion is to cut down on drinks in the evening while keeping your fluid intake up during the day. Do not simply drink less overall.

If it is restless legs

Tommy's reports that around 1 in 5 pregnant women and birthing people develop restless legs syndrome, usually in the third trimester. It is a distinct condition with its own management, not a sleep hygiene failure.

If it is pain

Pillows under the bump and between the knees are the standard suggestion from both Tommy's and the NHS. If hip, back or pelvic pain is what is waking you, that is a physiotherapy conversation — NICE recommends considering physiotherapy referral for pregnancy-related pelvic girdle pain.

If it is feeling hot

NHS advice for feeling hot in pregnancy is loose clothing made from natural fibres and keeping your room cool.

If it is itching — read this properly

This is the one cause on the list that can be urgent, and it is regularly filed under "annoying" instead. The NHS says to get urgent medical help now if you are pregnant and have very itchy skin — "for example, it keeps you awake at night" — or if the palms of your hands or soles of your feet are itchy, or the itching is worse at night. These can be signs of intrahepatic cholestasis of pregnancy, which needs urgent treatment. Call your maternity unit, or 111 if you cannot reach them.

If itching is why you are awake, do not read the rest of this page first. Make the call.

Sleep position after 28 weeks

This is the one piece of sleep advice in pregnancy with formal national guidance behind it, and it is about safety rather than comfort.

NICE NG201 recommendation 1.3.25: "Advise women to avoid going to sleep on their back after 28 weeks of pregnancy and to consider using pillows, for example, to maintain their position while sleeping." Recommendation 1.3.26 explains why: "there may be a link between going to sleep on her back and stillbirth in late pregnancy (after 28 weeks)."

The NHS puts it as: "The safest position to go to sleep is on your side, either left or right." Tommy's says: "From about 28 weeks, it is safest for your baby if you sleep on your side."

Note the wording carefully — the guidance is about the position you go to sleep in. You cannot control what you do while asleep, and waking up on your back is not something to panic about. Turn onto your side and go back to sleep. Pillows behind your back and between your knees make it easier to stay there.

What actually helps — and what the evidence behind it is

An honest caveat first: unlike heartburn, leg cramps or pelvic pain, there is no completed systematic review of treatments for insomnia in pregnancy to point at. Everything below is national guidance, and guidance in this area rests on general sleep advice rather than pregnancy-specific trials. Treat it as sensible rather than proven.

• Wind down before bed. NHS: "Try to relax before bedtime so you're not wide awake." Relaxation techniques are worth asking your midwife about.
• Cut evening caffeine. NHS: "Avoid tea, coffee or cola drinks in the evening, as the caffeine can make it harder to go to sleep." Tommy's advises reducing caffeine more generally.
• Be careful with naps. NHS: "It's best not to nap in the afternoon or evening as this may mean you're not tired at bedtime." Note that this sits in tension with the same page's advice to "rest as much as possible" — the resolution is to rest during the day without sleeping late in it.
• Move during the day. NHS suggests a walk at lunchtime or swimming. Tommy's adds a limit: avoid vigorous exercise in the four hours before bed.
• A consistent routine, a dark quiet room, and fewer screens before bed (Tommy's).
• Pillows. Under the bump, between the knees, behind the back.

What not to do

Do not start any sleep medicine, including things bought over the counter, without asking a pharmacist, midwife or doctor first. The HSE's general instruction applies here — tell the pharmacist you are pregnant before taking anything. Tommy's is explicit for the related problem of restless legs: "Medication for restless legs syndrome is not really recommended during pregnancy or while you are breastfeeding."

When to call

Get urgent help now if:

• Itching is keeping you awake, or your palms or soles are itchy (NHS — possible intrahepatic cholestasis of pregnancy).
• Breathlessness comes on suddenly, you are out of breath lying down, or it comes with chest pain or dizziness. The NHS says this "needs to be checked immediately".
• You have a severe headache, vision changes, pain below your ribs, or a sudden increase in swelling of your face, hands or feet.

Call your local emergency number (999 in the UK and Ireland, 911 in the US and Canada, 000 in Australia, or 111 in New Zealand) if you collapse or have a seizure.

Speak to your midwife or doctor if:

• You are exhausted beyond what sleep loss explains. Tommy's advises consulting your midwife if extreme tiredness persists, because iron deficiency may need testing.
• Sleeplessness comes with low mood. The NHS notes that sleeplessness alongside other symptoms can be a sign of depression, and to seek help if you are "feeling hopeless and losing interest in the things you used to enjoy."
• Sleep loss is affecting your mental health or your ability to get through the day (Tommy's). The NHS lists stress, anxiety or low mood that affects daily functioning among the pregnancy symptoms you should get help for.

Lack of sleep in pregnancy is treated as a normal complaint, and mostly it is. But it is also one of the ways a treatable problem — anaemia, restless legs, reflux, low mood, or a liver condition — announces itself. It is worth one conversation to find out which.