Sleeping on your stomach is generally okay in early pregnancy, but most people switch to a side-sleeping position as the pregnancy progresses. Here's a practical guide to help you decide when to stop lying on your stomach and what to do instead. What to expect by stage
- First trimester (weeks 1–12): Stomach sleeping is usually comfortable and fine for many people, since the uterus isn’t yet pressing on the abdomen or pelvic area. If it remains comfortable, you can continue, but listen to your body and adjust if you develop discomfort.
- Second trimester (weeks 13–28): Your belly begins to grow more noticeably. Sleeping on your stomach often becomes uncomfortable or impractical for many people. It’s common to start feeling better with a side-sleeping position around mid-pregnancy.
- Third trimester (weeks 29–40): Stomach sleeping is generally not recommended for most people. The growing uterus and baby can make this position uncomfortable and there can be increased pressure on internal organs.
Recommended sleeping position
- Side sleeping is preferred, especially as you move into the second and third trimesters. Left-sided sleep is commonly recommended because it can improve circulation to the uterus and to the fetus, as well as kidney function in the mother.
- Use pillows for support:
- Place a knee pillow between your knees to reduce pelvic pressure.
- A pregnancy pillow or a body pillow can provide support for your belly and back.
- If you have back discomfort, a small pillow or rolled towel behind your back can help maintain a comfortable side-sleep position.
When to adjust or seek care
- If you experience persistent or increasing abdominal pain, vaginal bleeding, severe dizziness, or any new concerning symptoms while sleeping, contact your healthcare provider promptly.
- If you have specific conditions (for example, placenta previa, multiple gestation, or a history of preterm labor), your provider may have additional guidance tailored to you.
Tips for easier transition
- Begin practicing side-sleeping gradually even before it’s strictly necessary to help your body adapt.
- Ensure your mattress provides good support and that your neck and spine stay aligned.
Bottom line
- Stop lying on your stomach when it becomes uncomfortable or after the first trimester for most people, with a stronger push to switch during the second trimester. Prioritize side sleeping, with left-side preference when possible, and use supportive pillows to stay comfortable and safe. If you have specific medical concerns or pregnancy complications, consult your clinician for personalized advice.
