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Sleeping Well During Pregnancy: Mattress & Position Guide 2026

Sleeping well while pregnant: ideal position, suitable mattress, pregnancy pillows. Comprehensive guide from the 1st to the 3rd trimester for comfortable sleep.

|5 min read

Sleeping well during pregnancy is a progressive challenge. The 1st trimester brings fatigue and nausea. The 2nd is often more comfortable. The 3rd becomes a real obstacle course: a large belly, back pain, heat, frequent nighttime awakenings... And yet, quality sleep is essential for you and your baby.

This guide provides practical advice to optimize your sleep in each trimester.

The Challenges of Sleep During Pregnancy

According to several studies, more than 75% of pregnant women experience sleep disturbances at some point during pregnancy. The main causes:

  • 1st trimester: excessive daytime sleepiness, nausea, nighttime awakenings to urinate
  • 2nd trimester: leg cramps, restless leg syndrome, ligament pain
  • 3rd trimester: discomfort related to belly size, heartburn, sleep apnea, baby movements

On the Left Side: The Ideal Position

From the 2nd trimester, the left side position is recommended by obstetricians worldwide for several concrete reasons:

1. Improves circulation to the placenta: the aorta runs up the right side of the spine. On the left side, it is less compressed, optimizing blood flow. 2. Relieves the vena cava: the inferior vena cava (which returns blood from the legs) is on the right. On the left side, it is freed. 3. Reduces swelling: the left position promotes venous return from the lower limbs. 4. Improves kidney filtration: the kidneys function better in the left lateral position.

In practice: no one stays in one position all night. Don't stress if you wake up on your back or right side. Gently turn back to the left.

What to Avoid

  • On your back after 20 weeks: compression of the vena cava.
  • On your stomach after the 1st trimester: impossible after a certain stage, and uncomfortable.

The Right Mattress for Pregnancy

Key Features

Medium firmness: this is the ideal balance during pregnancy.

  • Too firm: creates pressure on the hips and shoulders in the lateral position.
  • Too soft: difficult to turn over, poor lower back support, feeling of being sunk in.

Zonal support: a mattress with differentiated zones (softer shoulder zone, firmer lumbar zone) naturally adapts to morphological changes.

OEKO-TEX Certification: during pregnancy, avoid unnecessary exposure to chemical substances. Choose a certified mattress.

Solutions Based on Your Current Mattress

SituationSolution
Mattress too firmMemory foam or soft latex topper
Mattress too softDifficult to correct - consider a new mattress or a firm topper
Comfortable mattressSimply add a pregnancy pillow
Old mattress (>10 years)A good opportunity to invest in a new model

Our Pregnancy Recommendation

The Emma Original in medium version is an excellent choice: OEKO-TEX certified, universal medium firmness, zonal support, and a practical washable cover for accidents. The Tediber is also excellent.

If your mattress is too firm, a memory foam topper (3-5 cm) is the most economical and practical solution.

The Pregnancy Pillow: Essential from the 2nd Trimester

Types of Pregnancy Pillows

C-shaped pillow (half-moon): supports the belly and neck. Compact, easy to move.

U-shaped pillow (full body): surrounds the entire body, simultaneously supporting the belly, back, and knees. The most complete but bulky.

Body pillow (long): long cushion that you hug against you. Versatile and practical.

Wedge pillows: small cushions placed under the belly or between the knees. The economical option.

How to Use the Pregnancy Pillow Properly

Optimal position on the left side: 1. Head on your usual pillow. 2. Pregnancy pillow slipped between the knees (relieves the hip and pubic symphysis). 3. Back part of the U pillow against the back (stabilizes the position, prevents rolling onto the back). 4. Front part under the belly (relieves weight).

Other Factors That Improve Sleep

Room Temperature

Pregnant women often feel warmer. Keep the room at 18-20 degreesC and opt for a light duvet. Cotton or bamboo sheets breathe better.

Frequent Nighttime Awakenings to Urinate

Inevitable in late pregnancy. To minimize them:

  • Reduce drinks after 6 PM (but stay well-hydrated during the day).
  • Ensure good lighting on the path to the bathroom.
  • Get up slowly to avoid orthostatic dizziness.

Nighttime Cramps

Common in the 2nd and 3rd trimesters (lack of magnesium, nerve compression). Tips:

  • Magnesium supplementation (after medical advice).
  • Stretching calves before bed.
  • Sufficient hydration.

Restless Leg Syndrome

Affecting 20 to 30% of pregnant women, it manifests as an irresistible urge to move the legs at rest. Consult your midwife or doctor if it significantly affects you.

The Return After Childbirth

Your favorite mattress will return to normal after childbirth. If you invested in a medium mattress during pregnancy, know that it will be perfectly suitable for sleeping with your baby next to you (if you have an approved co-sleeping arrangement) or simply to recover from nights often interrupted.


See also: Sleeping Position Guide | Guide to Choosing Your Cervical Pillow | Comparison of the Best Mattresses 2026