Best Pregnancy Pillow for Your Situation
Pregnancy discomfort is not one problem, and the right pillow shape depends on which one you have. Here is how the shapes compare for the four situations UK shoppers ask about most.
Best pregnancy pillow for side sleepers
From around the second trimester, side sleeping — ideally on the left — becomes the position most UK midwives suggest, and it is the position nearly every pregnancy pillow is designed around. The problem side sleepers actually report is not getting into the position but staying in it: the top knee drops forward, the pelvis twists, and the bump is left unsupported.
A full-body U-shape solves this because it supports both sides at once. You are held front and back, so turning over does not mean rebuilding a nest of pillows in the dark. The Full Body U-Shaped Pregnancy Pillow with Washable Cover has 182 cm legs and a 40 cm width, which is long enough to run from head to ankle for most heights.
A C-shape or single long pillow supports one side only. It is less bulky and better if you share a bed, but you will need to reposition it each time you turn.
Pick: U-shape if you turn during the night; C-shape if bed space is tight.
Best pregnancy pillow for hip pain and pelvic girdle pain (PGP)
Pelvic girdle pain — pain across the pubic bone, hips or lower back, sometimes with a clicking sensation when walking or turning in bed — affects roughly one in five pregnancies. It is usually worst when the legs separate, which is exactly what happens when the top leg falls forward during side sleeping.
The aim is keeping the knees and ankles stacked in line with the hips, so the pelvis stays level rather than rotating. A firm pillow between the knees does more for this than a soft one, because a soft pillow compresses overnight and lets the leg drop anyway. The 40 cm-wide legs on the Full Body U-Shaped Pregnancy Pillow with Washable Cover sit between the knees while the rest of the pillow supports the bump; for a firmer, more structured feel that holds its shape longer, the Pregnancy Cuddle Support Pillow – Handmade is the better option.
If PGP is limiting your walking, turning in bed, or climbing stairs, a pillow is comfort support alongside — not instead of — treatment. Ask your midwife for a referral to a women's health physiotherapist, who can assess you and provide a support belt if appropriate.
Pick: a firm, full-length shape that keeps knees stacked — and a physio referral if PGP affects daily movement.
Best pregnancy pillow for back sleepers and night-time reflux
If you have always slept on your back, the switch is one of the harder adjustments of pregnancy. Lying flat also tends to make heartburn and reflux worse, which is common from the second trimester as the growing uterus presses upward.
Two different jobs, two different answers. To stop rolling onto your back, a U-shape works as a physical barrier — the far leg of the pillow sits behind you, so rolling back meets resistance and tends to wake you enough to resettle on your side. To reduce reflux, the fix is elevating your upper body rather than the pillow shape: a Bed Wedge Pillow for Acid Reflux and Elevated Sleeping under the top pillow creates a gradual incline instead of the sharp bend you get from stacking pillows, which can make matters worse by compressing the stomach.
Pick: U-shape to stay off your back; add a wedge if reflux is the main complaint.
What size pregnancy pillow do you need — 9ft, 12ft or full body?
Pregnancy pillows are advertised in a confusing mix of units: feet of total edge length, centimetres per side, or nothing at all. "9ft" and "12ft" describe the pillow's length measured around its whole outer edge, not how much bed it occupies — a 12ft U-shape does not need a 12ft bed.
- Around 9ft (roughly 275 cm edge) — suits most people up to about 5'6". Less bulk, easier on a double bed shared with a partner.
- Around 12ft (roughly 365 cm edge) — better if you are taller than about 5'8", or want the pillow to reach past your ankles rather than stopping at the knee.
- Measure instead of guessing: the useful number is the length of one leg. The Full Body U-Shaped Pregnancy Pillow with Washable Cover has 182 cm legs, which reaches head to ankle for most heights.
On a UK double (135 cm wide), a full-size U-shape leaves limited room for a partner. If that is your situation, a C-shape or a single long pillow is the more realistic choice.
Pick: match leg length to your height, and shape to how much bed you can spare.