Sleep and pregnancy have a difficult relationship. Between shifting hormones, a changing body, and a long list of new discomforts, most pregnant people find sleep gets harder — and it changes as the pregnancy progresses. Here's what to expect across the trimesters and the safe, practical things that help. Because pregnancy is a medical situation, this is general information only, and your provider is the right person to guide anything specific.

Trimester by trimester

First trimester: Surging progesterone brings daytime sleepiness, but nausea, frequent urination, and tender breasts start fragmenting nights. Many people also notice nasal congestion — pregnancy rhinitis is common as blood volume and hormones increase, and it can turn you into a mouth breather at night.

Second trimester: Often the easiest stretch as early nausea eases, though heartburn and vivid dreams may appear.

Third trimester: The hardest for sleep. Physical discomfort, frequent urination, back pain, leg cramps, restless legs syndrome (notably more common in pregnancy), heartburn, and shortness of breath all pile up. Sleep-disordered breathing and snoring also rise in later pregnancy. (More on restless legs.)

What safely helps

  1. Sleep on your side, ideally the left, especially later on — it improves circulation to the baby and is generally recommended in the third trimester. A pillow between the knees and under the bump helps.
  2. Manage reflux by not eating late, elevating your head, and avoiding trigger foods.
  3. Handle congestion drug-free. Since many decongestants aren't advised in pregnancy, mechanical options are appealing: saline, a humidifier, and a drug-free nasal strip to open the nose. If congestion is pushing you to mouth-breathe, a strip like the TitanAir Nasal Strips can help you breathe through your nose — clear anything you use with your provider first. (How nasal strips work.)
  4. Keep the fundamentals: consistent timing, a cool dark room, and a calming wind-down. (The fundamentals of sleeping better.)
  5. Nap smart to cover lost night sleep, but not so late it steals night-time sleep pressure.

An important safety note on mouth taping

One thing this site normally discusses — mouth taping — is not something to start during pregnancy without your doctor's okay. Pregnancy raises the risk of nasal congestion and sleep-disordered breathing, and sealing the mouth is not the right move when your airway may be compromised. Pursue the nasal-breathing benefit the gentle way (clear the nose, use a drug-free strip), and leave taping decisions to a conversation with your provider. (The full careful answer on mouth taping while pregnant.)

When to tell your provider

Loud snoring, gasping, witnessed breathing pauses, or significant daytime exhaustion in pregnancy deserve a mention to your provider — sleep apnea in pregnancy is linked to complications like gestational hypertension and is worth catching. So is severe insomnia or restless legs, both of which have safe management options.

FAQ

Why is sleep so hard during pregnancy? Hormonal changes, nausea and frequent urination early on, and later physical discomfort, heartburn, restless legs, congestion, and shortness of breath all disrupt sleep. It also tends to get harder as the pregnancy progresses into the third trimester.

What is the best sleep position during pregnancy? Side sleeping, ideally on the left, is generally recommended especially in the third trimester because it improves circulation to the baby. A pillow between the knees and supporting the bump adds comfort.

How can I relieve pregnancy congestion at night without medication? Many decongestants aren't advised in pregnancy, so drug-free options help: saline sprays or rinses, a humidifier, and a nasal strip to mechanically open the nose. Clear anything you use with your provider.

Is it safe to mouth tape during pregnancy? Not without your doctor's okay. Pregnancy raises the risk of congestion and sleep-disordered breathing, so sealing the mouth isn't advised — pursue nasal breathing gently (clear the nose, use a drug-free strip) and leave taping to a medical conversation.

The bottom line

Pregnancy disrupts sleep differently in each trimester — nausea and congestion early, discomfort and reflux late — but much of it is manageable: side-sleep on the left, tame reflux and congestion the drug-free way, and hold the fundamentals. Skip mouth taping unless your provider approves, and flag loud snoring or severe symptoms, since apnea in pregnancy matters. Above all, let your provider guide the specifics.