Relvay makes a pregnancy pillow. We also tell you below when you should not buy one.
The short answer
A pregnancy pillow fits a small bed only if it fits on your half. Measure half the mattress, subtract how wide you are lying on your side, and the space left is what a pillow can use.
- Full or twin: a full-length U is usually wider than your half.
- Queen: a U fills your half; compact pieces leave room.
- What matters: width across the bed, not length.
1:12 a.m., and 18 inches of mattress
In a full or queen bed, the trouble with most pregnancy pillows is not comfort. It is width. Here is what that looks like at night.
1:12 a.m.
I was 30 weeks, in a one-bedroom apartment, in the full-size bed Ryan and I bought when we moved in together. We used to joke that it was cozy. Then I brought home a big C-shaped pregnancy pillow, and cozy turned into something else.
That night I woke up because the bed was shaking. Ryan, who is six foot one, was trying to turn over on the last strip of mattress without falling off. His arm hung over the edge. My pillow, my bump and I had the rest.
I said sorry. He said it was fine. At 3 a.m. I heard the couch creak in the living room, and I lay there in a bed that finally felt comfortable and completely wrong.
- If your partner now sleeps on his side, facing the wall, on the very edge...
- If you lie awake doing math about inches...
- If the pillow helps you but costs him his sleep...
- If someone has already moved to the couch, "just for tonight"...
The pillow is not too big and your bed is not too small. They were just never measured against each other.
"This is great if you have the whole bed to yourself. My partner complains I take up too much of the bed rolling over."YouTube comment on a pregnancy pillow video
"I had previously bought one of those giant, bulky oval-shaped pregnancy pillows and was totally not a fan (and neither was my husband based on how much space it took up on the bed)."Amazon review of a pregnancy pillow
What we tried before measuring anything
Most couples in a small bed try to make the big pillow work by squashing, folding or moving it. Each fix gives back a little room and takes something else.
- Pushing the C pillow to my edge.It gave Ryan a few inches. It also put my back on the cold edge with nothing behind me, and I woke up sliding forward off the pillow.The room came back. The support left.
- Folding the long end under my knees.Less pillow across the bed, but now there was a hard lump under my legs and my hips ached by morning.A folded pillow is a different pillow.
- Taking turns on the couch.We tried it for a week. One of us was always tired, and we stopped saying goodnight in the same room.This was the one that hurt.
- Getting up to pee.On a full bed, the only way out was over the pillow or over Ryan. Most nights I chose the pillow and woke him anyway. "Then you have to try to escape the legion of pillows and quilts you've assembled around yourself every time you have to wake up to pee." (YouTube comment) · No room to get out is its own problem.
Why does a pregnancy pillow crowd a small bed?
Because a pregnancy pillow lies across the width of the bed, not along it, and side sleeping with support in front and behind makes you much wider than you are on your back.
Your side-lying widthFrom the front of your bump to the back of your spine. It grows every month.
Support in frontWhatever sits under and in front of your bump adds its thickness on one side.
Support behindWhatever sits behind your back adds its thickness on the other side.
Length almost never matters. A typical U pillow is 59 to 63 inches long, and every standard mattress is 75 inches or longer. Width is where the bed runs out.
It also explains why folding a big pillow or pushing it to the edge never quite worked. Those moves change where the width goes, not how much of it there is, and the bed stays just as full.
In a small bed, the question is not how big the pillow is. It is how wide you become once you are supported on both sides.
Once you have that number, choosing gets easy. Below is the five-minute measurement, the free setup to try first, and the compact layout that gave Alyssa her bed back.
How do you measure a small bed for a pregnancy pillow?
Measure three things: half your mattress, your width lying on your side, and the thickness of the pillow in front and behind you. Subtract, and you know what is left for sleeping room.
- Measure the mattress width edge to edge, then halve it. That is your side.
- Lie on your side the way you sleep, knees bent. Ask your partner to measure from the front of your bump to the back of your spine.
- Check the pillow listing for how thick each part is in front of and behind you. Ask the seller if it is missing.
- Add your width plus front plus back. That is your sleeping footprint.
- Compare it with your half. If the footprint is bigger, the pillow is taking your partner's side.
| Bed (US standard width) | Your half | A U pillow, 28 to 31 in wide |
|---|---|---|
| Twin, 38 in | 38 in (sleeping alone) | Fits, little room to turn |
| Full, 54 in | 27 in | Wider than your half |
| Queen, 60 in | 30 in | About your whole half |
| California king, 72 in | 36 in | Fits, some room left |
| King, 76 in | 38 in | Fits |
Write it on one line: my half ___ in, minus my footprint ___ in, equals ___ in left. Zero or less means someone sleeps on the edge.
Can you make regular pillows work in a small bed?
Often, yes. Regular pillows can be placed tight to your body, so they use less width than one big shaped pillow. Try this for three nights before you buy anything.
- Keep your own head pillow and nothing wider.
- Put a pillow between your knees and ankles, running along your legs, not across the bed.
- Fold a small pillow in half under your bump so it stays close to your body.
- Push a pillow behind your lower back, tucked under the sheet edge so it does not drift toward your partner.
- Take the side nearest the bathroom so you can get up without climbing over anyone.
If the pillows stay put and you both sleep, you are done. The NHS suggests this kind of pillow support for side sleeping. If they end up on the floor or in your partner's back by 2 a.m., read on.
When is a different pillow worth it in a small bed?
It is worth changing your setup when the pillow you have costs one of you a night's sleep. Tick what sounds like your week:
- My partner sleeps on the edge or has moved to the couch.
- I cannot get out of bed without climbing over a pillow or a person.
- Pushing my pillow to the edge leaves my back with nothing behind it.
- Regular pillows drift onto my partner's side during the night.
- We have not been able to lie close in weeks.
Two or more? The footprint is the problem, not you. A layout that stays close to your body is worth a look, especially from the third trimester, when side sleeping becomes the advice for the rest of pregnancy.
Hip, pelvic or back pain that keeps you up is worth raising with your midwife, OB-GYN or a pelvic health physical therapist. A pillow is a comfort aid, not a treatment.
Which pregnancy pillow types fit a small bed?
Pieces that sit close to your body fit a small bed. Pillows that surround you do not. Here is how the common types compare on half a full or queen.
| U pillow | C pillow | Long straight body pillow | Single wedge | Two wedges strapped together | |
|---|---|---|---|---|---|
| Width across the bed | Your whole half or more | Most of your half | Narrow, but hugged in front | Very little | Close to your torso |
| Room left on half a full | None | Little | Some | Plenty | Some |
| Bump and back together | Yes | Yes | One side | One or the other | Both |
| Getting out to pee | Climb out | Open side only | Easy | Easy | Easy |
| Partner can lie close | Hard | On the open side | Yes | Yes | Yes |
If your measurement left less than a few inches, skip anything that wraps around you. For body measurements like height and bump size, our pregnancy pillow size guide goes deeper.
What changed when the pillow fit her half?
When the support stayed inside her half, both of them slept in the same bed again, and getting up stopped being a climb.
Alyssa did the measuring on a Sunday afternoon. Her half of the full was 27 inches. Lying on her side at 30 weeks she was about 14 inches front to back, and the C pillow added more than that on its own. The math explained every night on the couch.
She switched to two small wedges joined by a strap, one under her bump and one behind her back, with a regular pillow between her knees. The first night Ryan stayed. The second night she got up twice and did not wake him once. By the weekend he was lying close again, one hand on her bump, complaining that the baby kicked him.
Frequently asked questions
Will a U-shaped pregnancy pillow fit in a full bed?
Usually not on your half. A full mattress is 54 inches wide, so your half is 27 inches, and a typical U pillow is 28 to 31 inches wide before you are even lying in it. Your partner loses space.
Can I use a pregnancy pillow in a queen bed with my partner?
Yes, if it stays on your 30 inches. A U pillow takes about all of that. C pillows, long straight pillows and wedges leave more room. Measure your side-lying width before you choose.
What kind of pregnancy pillow takes the least space?
Small pieces that sit close to your body, like a wedge under the bump, a wedge behind the back, or two wedges joined by a strap, plus a regular pillow between your knees.
Does pillow length matter in a small bed?
Rarely. Most pregnancy pillows are shorter than a standard mattress, which is 75 inches long or more. Width across the bed is what crowds a partner, so check that number first.
How do I stop my pregnancy pillow taking over the bed?
Keep support tight to your body, tuck the back pillow under the sheet edge, run the knee pillow along your legs, and take the side of the bed nearest the bathroom.
Where the Relvay 3-Piece pillow fits in
The Relvay 3-Piece is the strapped two-wedge layout Alyssa switched to. It is built to stay close to your torso, so in a full or queen bed it is one of the few setups that can leave your partner his side.
1. The bump wedgeA crescent-shaped wedge that tucks under your bump, thin edge toward your belly button, so the weight is not pulling on your back.
2. The back wedgeThe same shape, snug against your lower back so it has something to rest against.
3. The strap and small cushionA flat strap runs under you and joins the two wedges, so they stay together instead of drifting apart. A small round bolster rests on the strap between them. The strap is a fixed length with no buckle, so as the bump grows you adjust the fit by how you tuck each wedge against your body, not by the strap.
Each wedge is about 17 by 13 inches and about 4 inches thick at its outer edge, tapering thinner toward your body (supplier measurement). Opened out, the set is roughly as wide as your torso, so it stays on your half of the bed and you keep your normal head pillow. Soft ribbed pink fabric on top, white sides. It is small enough to pack for a trip.
What it does not do: it does not go between your knees. Keep a regular pillow there, the way the NHS suggests. That combination covers all three points without a giant pillow.
Probably not for you if
- Regular pillows already fit your half and stay put.
- You want one pillow that wraps your head, back and knees together.
- You sleep alone in a king and have room to spare.
- Your main problem is pain that needs a doctor's advice first.
Made for you if
- Your measurement left only a few inches on your half.
- You share a full or queen bed.
- You want bump and back support without wrapping yourself in a pillow.
Try it for 90 nights
Sleep on it through the weeks that matter. If it is not right for you, email us within 90 days of delivery and send it back for a refund. Return shipping is on you unless it arrived faulty.
$79.99
90-day money-back guarantee · Free US shipping over $70 · 3 pieces, one set
Check price and availabilityAlyssa's story is a composite based on real reviews and public posts from pregnant side sleepers. Names and details are changed.
