Pregnancy Pillow Guide: Types, Shapes and What to Consider Before Buying

As pregnancy progresses, finding a comfortable sleeping position gets harder. Pregnancy pillows are designed to help with that, and they come in several shapes. This guide explains the main types, how they are used, what to look for when buying, and which questions to bring to your midwife or doctor. It is informational only: pregnancy pillows are comfort aids, not medical devices, and they cannot prevent or treat pregnancy complications.

What Is a Pregnancy Pillow?

A pregnancy pillow is a large, shaped pillow that supports the belly, back, hips, and knees, particularly for side sleeping. Many people use one from the second or third trimester, although you can use it earlier if it is comfortable. Pregnancy pillows are different from standard head pillows: they are bigger, shaped for the body, and sometimes sold as "body pillows" or "maternity pillows."

A Note on Sleeping Position

Health services give specific advice about sleep position in later pregnancy. The NHS says that research suggests going to sleep on your back after 28 weeks of pregnancy can increase the risk of stillbirth, and advises going to sleep on your side, either left or right. A 2019 analysis in JAMA Network Open (Anderson and colleagues) found that going to sleep in the supine (back) position in late pregnancy was associated with lower birth weight, building on research linking back-sleeping in late pregnancy to reduced uterine blood flow. This is a general public-health message, not a diagnosis. If you wake on your back, simply turn onto your side. Some pregnancy pillows can help you stay on your side, but a pillow is not a guarantee, and you should follow your midwife's or doctor's advice.

Illustrative stock image, not a photograph of a pregnancy pillow.

Types of Pregnancy Pillows

C-shaped pillows

A C-shaped pillow curves around your body, supporting your head, back, and between your knees in one piece. It is often used as a compact, all-in-one option. One side of the "C" may sit behind you (to stop you rolling onto your back) and the other in front.

• Good for: people who want head, belly, and leg support in one pillow.
• Consider: you may need to flip it when you switch sides.

U-shaped pillows

A U-shaped pillow wraps around both sides of your body, offering support in front and behind, so you do not need to flip it.

• Good for: people who change sides during the night and want continuous support.
• Consider: it takes up a lot of bed space, which can be a problem if you share a bed.

Wedge pillows

A wedge is a small triangular pillow, often placed under the belly or behind the back. Some people use a wedge to elevate the upper body.

• Good for: targeted support, travel, and small spaces.
• Consider: it provides less overall support than a full-body pillow.

Full-length body pillows

A long, straight pillow that you can hug and place between your knees. It is a simple and widely available option.

• Good for: people who like to hug a pillow, and for use after pregnancy.
• Consider: it provides less back support than C- and U-shapes.

Other options

Some people use ordinary pillows, a rolled blanket, or a firm pillow between the knees. A pillow does not have to be labeled "pregnancy" to be useful.

Comfort and Positioning Considerations

• Between the knees: helps keep the hips and pelvis aligned for some people.
• Under the belly: supports the weight of the bump.
• Behind the back: helps prevent rolling onto your back.
• Elevating your upper body with a wedge or extra pillow may help with heartburn or breathing comfort. Ask your healthcare professional if you have heartburn or breathing problems.
• Temperature: pregnancy can make you feel hot. Consider breathable covers.
• Firmness: too soft may not support you, and too firm may feel uncomfortable.

If you have pelvic girdle pain, back pain, swelling, or severe discomfort, ask your midwife, doctor, or a physical therapist for advice. A pillow cannot treat these.

What to Look For When Buying

Factor	What to check
Shape	C, U, wedge, or straight, matching how you sleep and bed space
Size	Fits your bed and your body, especially if you share a bed
Fill	Polyester fiber, memory foam, microbeads, or other fill; check allergies and firmness
Cover	Removable and machine washable, breathable
Care	Whether the whole pillow can be washed or only the cover
Safety	Check for flame-retardant and chemical claims, and verify certifications in the certifier's database
Trial and returns	A clear return policy, since fit is personal
Price	The final total, including shipping and tax
Reviews	Look for patterns, including complaints about size and support

Cleaning and Maintenance

• Follow the care label. Many pregnancy pillows have a removable cover that can be machine washed.
• Fluff fiber fill regularly and air dry fully.
• Wash covers often, since pillows get a lot of use.
• Replace the pillow if it is flat, lumpy, smelly, or moldy.

Questions to Discuss With a Healthcare Professional

• Which sleeping positions are best for me at this stage of pregnancy?
• Do I have any conditions (such as heartburn, breathing problems, back or pelvic pain, or swelling) that affect how I should sleep?
• Is there something I should avoid, such as certain positions or inclines?
• What should I do if I wake up on my back?
• Are there signs, such as reduced baby movements, that I should never ignore and should report right away?
• Can a physical therapist help with pelvic or back pain?

Always contact your midwife or doctor promptly if you notice reduced baby movements, bleeding, severe pain, headaches with vision changes, or anything that worries you.

Frequently Asked Questions

When should I start using a pregnancy pillow?

Whenever it is comfortable. Many people start in the second or third trimester.

Which type is best?

It depends on your bed, your body, and how you sleep. C- and U-shapes offer more support, and wedges and straight pillows are simpler.

Can a pregnancy pillow keep me from sleeping on my back?

It may help you stay on your side, but it is not a guarantee. Follow your midwife's advice.

Can I use it after pregnancy?

Many people use body pillows afterward for comfort or nursing support.

Is it safe for the baby?

A pregnancy pillow is a comfort aid. Safe sleep guidance for newborns is different. Never place pregnancy pillows in a baby's sleep space. Follow safe sleep guidance for infants.

Final Thoughts

A pregnancy pillow can make nights more comfortable, especially for side sleeping, but it is not a medical device. Choose a shape that suits your bed and body, check the return policy, and follow your midwife's or doctor's advice about sleep position and symptoms. For general sleep habits, see our guides to building a healthy sleep routine and how to choose a pillow.

Medical Disclaimer

This guide is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Consult your midwife, obstetrician, or other qualified healthcare professional about sleep, comfort, and any symptoms during pregnancy.

References and Further Reading

• NHS. What you can do to reduce the risk of stillbirth
• Anderson NH, et al. (2019). Association of supine going-to-sleep position in late pregnancy with reduced birth weight. JAMA Network Open.
• Centers for Disease Control and Prevention (CDC). About Sleep