Pregnancy insomnia affects about four in ten pregnancies, and it shifts by stage — roughly a quarter of women report symptoms in the first trimester and four in ten by the third. CBT-I has randomized evidence in pregnancy and one trial described it as safe. Anything you might take is a question for your OB.
Common enough that it is closer to typical than to unusual. A meta-analysis pooling 24 studies and 15,564 participants put the overall prevalence of insomnia symptoms during pregnancy at 38.2%.
The stage of pregnancy made a real difference, and the pattern tells you what to expect. Prevalence was 25.3% in the first trimester and 39.7% in the third. So the hardest stretch for most people is the last one, and if your first trimester is already difficult, you are in a minority.
One thing to be clear about: prevalence tells you how common a thing is, not that it is fine. Sleeping badly for months is worth raising with your OB or midwife whether or not four in ten people are doing the same.
For different reasons at different stages, which is why advice that worked in month four can stop working in month eight.
If daytime energy is the bigger problem than the nights themselves, we have written separately about how to get energy when pregnant.
Ask your OB or midwife. What is appropriate depends on your gestational age, your history, and what else you are taking, and none of that is knowable from a search result.
The evidence base here is thin. The meta-analysis that produced the prevalence figures closes by saying future research should examine the efficacy and safety of insomnia treatments with this population — meaning the safety of insomnia treatments in pregnancy is understudied, which is not the same as established either way.
Melatonin deserves a specific note because you can buy it off a shelf, and that makes it feel like a lower-stakes decision than it is. In the United States melatonin is a dietary supplement rather than an approved drug, so it has not been through the pregnancy safety evaluation a prescription medication goes through, and the human evidence on taking it during pregnancy is very limited. Separately, it is a circadian signal rather than a sedative — which is why melatonin often does not work for the kind of sleeplessness people reach for it to fix. Ask your OB before taking it, not after.
The same goes for the rest of the supplement shelf, herbal teas included. Bring the bottle to your appointment and let the person with your chart make the call.
This is where the evidence is actually good, and it is the reason a behavioral approach is the first thing worth asking about.
A randomized clinical trial published in JAMA Psychiatry enrolled 208 pregnant women up to 28 weeks gestation with elevated insomnia symptoms, and randomized them to digital CBT-I — six weekly sessions of about 20 minutes — or to standard treatment. The CBT-I group showed significantly greater improvement in insomnia severity, with a large effect size (d = −1.03), and the pattern held at the 18-week follow-up. Every secondary outcome improved significantly except sleep duration, which is the same exception that shows up across the whole CBT-I literature.
The authors' own conclusion is the sentence worth carrying: digital CBT was an effective, scalable, safe, and acceptable intervention for improving insomnia symptoms during pregnancy. "Safe" there is the trialists' word about their own trial, in a population where safety is the whole question.
That trial has limits worth checking before you assume it describes you: the participants were mostly white, mostly married or cohabiting, mostly college-educated, and two thirds earned $100,000 or more. That is a narrow sample for a finding this useful.
What CBT-I involves is on what CBT-I is. One component needs a flag here: sleep restriction compresses time in bed, and pregnancy is exactly the situation where that is a clinician's decision. Do not compress your own sleep window while pregnant.
Sooner than most people do, and in specific terms. Bring it up if sleeplessness has run for weeks rather than nights, if you are considering anything you would swallow, if you are snoring or waking gasping, if your legs will not settle in the evening, or if the nights are being driven by anxiety or low mood.
The last three matter because they are separate conditions with their own treatments. Sleep-disordered breathing and restless legs both become more common in pregnancy and neither responds to better sleep habits.
For chronic insomnia that persists, a sleep specialist can assess whether CBT-I fits and coordinate with your OB. What you pay depends on your plan.
Timing is the lever that stays available. Keeping a steady rise time anchors your circadian rhythm, and it protects the sleep pressure you need the following night — which matters more in pregnancy than usual, because daytime naps are often the only rest you are getting and they do spend that pressure.
That is not an argument against napping while pregnant. It is an argument for knowing the trade: a long afternoon nap buys you the afternoon and costs you some of the night. Tracking sleep debt rather than grading each night makes that trade visible instead of mysterious.
RISE makes it easy to improve your sleep and daily energy to reach your potential
Because the causes change as pregnancy progresses and they stack. Early on it's rising progesterone and nausea; later it's size, reflux, breathlessness lying flat, and getting up to use the bathroom. Restless legs also becomes common. Prevalence climbs from 25.3% in the first trimester to 39.7% in the third, so worsening is the usual direction.
There's no fixed course, and the pooled data suggest the third trimester is the hardest stretch for most people. Treating it works: a randomized trial found digital CBT-I significantly improved insomnia symptoms in pregnancy, with gains holding at follow-up.
Behaviorally, the strongest evidence is for CBT-I: six weekly sessions of a digital program produced a large improvement in insomnia severity in a trial of 208 pregnant women. A steady rise time helps too. Anything you'd swallow — including melatonin and herbal teas — is a question for your OB or midwife first.
It happens, though it's less common than later on: 25.3% report insomnia symptoms in the first trimester against 39.7% in the third. Early-pregnancy sleep complaints more often involve fragmented nights and daytime sleepiness than trouble falling asleep. Common doesn't mean you should put up with it — mention it at your next appointment.
Ask your OB before you do. In the United States melatonin is a dietary supplement rather than an approved drug, so it hasn't been through the pregnancy safety evaluation a prescription goes through, and the human evidence on taking it while pregnant is very limited. It's also a circadian signal rather than a sedative, so it's often the wrong tool anyway.
Don't do it on your own while pregnant. Sleep restriction deliberately compresses time in bed to rebuild sleep pressure, and one lab study measured real transient daytime impairment during the acute phase. In pregnancy that's a clinician's decision made against your own numbers, not a schedule to set from an article.
