Your Changing Spine During Pregnancy: Supporting Your Body as It Adapts

Oct 4

6 min read

Pregnancy is one of the most remarkable examples of the human body adapting.

Your baby grows.

Your uterus expands.

Your centre of gravity changes.

Your breathing mechanics change.

Your muscles and ligaments respond to hormonal changes.

And, alongside all of this, your spine and pelvis continually adapt to help you remain balanced, mobile and comfortable.

Sometimes these changes are barely noticeable.

Sometimes they are very noticeable indeed!

A little more stiffness when you get out of bed. A different way of walking. A feeling that your balance isn't quite what it used to be. A sore lower back at the end of a long day.

These experiences can all be part of the remarkable process of pregnancy.

And perhaps one of the most helpful things we can do is stop expecting your body to stay the same while it is doing something completely new.

Your posture is changing for a reason

As your baby grows, the distribution of weight through your body changes.

Your centre of mass gradually moves forward, and your body makes adjustments to maintain balance.

Research shows that pregnancy can affect spinal curvature, pelvic position, gait and postural control, although the exact changes vary considerably from woman to woman.

You may notice your lower back becoming more curved.

You may stand differently.

Your stride may change.

You may find yourself widening your stance slightly when walking or standing.

These aren't necessarily signs that your body is doing something wrong.

They are adaptations.

Your body is responding to the changing environment inside and around you.

Your nervous system is part of the story

There is another piece of this adaptation that I find fascinating.

Your brain needs to know where your body is in space.

It receives information from your muscles, joints, skin, eyes and inner ear, constantly helping you coordinate movement and maintain balance.

During pregnancy, the physical landscape of your body is changing month by month.

Your nervous system therefore has a lot of new information to process.

The body you were moving around with in your first trimester isn't quite the same body you are moving around with in your third.

And yet your nervous system continually adapts.

You learn how to walk with your changing centre of gravity.

You learn how to get comfortable.

You learn how to reach, bend and lift differently.

You learn how to make space for your growing baby.

Pregnancy is an extraordinary lesson in adaptation.

You don't need to hold the “perfect” pregnancy posture

This is something I would particularly like pregnant women to hear.

You do not need to spend nine months trying to hold yourself perfectly upright.

There is no single posture that you need to maintain all day.

In fact, posture is not really a position.

It is a movement process.

We move between positions.

We shift our weight.

We sit.

We stand.

We walk.

We rest.

We reach.

We turn.

We change position because our bodies are constantly responding to what we are doing.

Recent research into pregnancy biomechanics also highlights how individual these changes can be. There is no single pattern of postural change that happens in every pregnant woman.

So rather than asking:

“Am I sitting correctly?”

try asking:

“Have I moved recently?”

That is often a much more useful question.

Movement is one of the best things you can give your changing body

Unless your obstetric or maternity care provider has advised you otherwise, staying physically active during pregnancy can have important benefits.

Walking is a wonderful example because it is simple, accessible and adaptable.

You can walk for five minutes.

Pregnant woman walking outdoors with relaxed posture, illustrating movement and healthy adaptation during pregnancy.

You can walk for thirty minutes.

You can walk slowly.

You can walk with a friend.

You can walk around your garden.

You can simply get up and walk around the house between periods of sitting.

The goal isn't to achieve a particular performance.

It is to keep your body participating in movement.

ACOG notes that, when there are no pregnancy complications that prevent it, staying active can reduce back pain and help maintain the ability to carry out everyday activities. It also recommends discussing exercise with your obstetric or maternity care provider, particularly before starting or changing an exercise programme.

Strength matters too

Pregnancy places new physical demands on your body.

Your abdominal muscles stretch as your baby grows. Your pelvis and spine are carrying a changing load, while your hips, legs, back and pelvic floor are all participating in movement and stability.

This doesn't mean you need an elaborate exercise programme.

It means that maintaining appropriate strength and physical capacity can be valuable.

Your body is preparing not only for pregnancy, but also for the physical demands of birth, caring for a newborn and recovering afterwards.

Exercise during pregnancy will help your body adapt to the pregnancy.

The aim is not to make your body rigid.

The aim is to help it remain capable of adapting.

What about back pain?

Back pain is common during pregnancy, but it shouldn't simply be dismissed as something you have to endure.

Pregnancy-related changes in weight distribution, hormones, abdominal muscles, spinal mechanics and pelvic stability can all contribute to discomfort.

Sometimes a few simple changes can help:

change position regularly
avoid staying in one position for long periods
take regular walks if comfortable
use supportive footwear
pay attention to how you lift and carry things
allow yourself adequate rest
maintain appropriate strength and mobility
speak to your healthcare provider if pain is persistent, severe or concerning

Your body is adapting, but that doesn't mean you have to simply put up with significant discomfort.

And some symptoms during pregnancy require medical assessment. If you experience concerning symptoms such as vaginal bleeding, fever, burning with urination, or other symptoms that worry you, contact your obstetric or maternity care provider.

Your spine is part of a bigger system

This is where I find the nervous-system perspective so valuable.

We can look at the spine purely as a mechanical structure.

Or we can appreciate it as part of a much larger system involving movement, sensation, balance and communication between the brain and body.

Every time you move, your nervous system receives information.

Every time you change position, your brain has an opportunity to update its understanding of where your body is.

Every time you walk, reach, turn or balance, you are giving your nervous system sensory information about your changing body.

Pregnancy is therefore not simply a time when your body is carrying more weight.

It is a time of constant neurological and physical adaptation.

Where does chiropractic care fit in?

My approach during pregnancy is not about trying to force a pregnant body into a particular posture or trying to make a woman's spine look a certain way.

Pregnancy is a physiological process, and the body needs room to adapt.

With Torque Release and Webster Techniques, I use a gentle, specific and neurologically focused approach. The intention is to provide appropriate sensory input to the nervous system and support healthy brain–body communication as the body moves through its changing demands.

This is complementary to—not a replacement for—your obstetrician, midwife or other maternity care.

Pregnancy care works best when the people supporting you communicate and work together.

Your body doesn't need to be perfect

There can be so much pressure during pregnancy.

Eat perfectly.

Exercise perfectly.

Sleep perfectly.

Sit perfectly.

Stand perfectly.

Prepare perfectly.

But pregnancy isn't a performance.

Your body is doing something extraordinary.

It is changing, adapting, compensating and learning every single day.

So instead of constantly asking whether you are doing pregnancy “right”, perhaps give yourself permission to listen to your body.

Move when you can.

Rest when you need to.

Change position.

Build strength appropriately.

Take a walk.

Breathe.

And allow your body to adapt.

This month's pregnancy practice

Change position before you become uncomfortable.

If you've been sitting for a while, stand up.

If you've been standing, sit down.

If you've been working at a desk, take a short walk.

If you've been walking for a long time, rest.

If you're comfortable on the floor, spend a few minutes there.

Notice how your body feels when you move from one position to another.

You don't have to correct yourself.

Just notice, move and adapt.

That is what your body is already doing.

Your changing body is doing something remarkable

Your spine is not failing because it changes during pregnancy.

Your posture is not necessarily “bad” because your shape changes.

Your pelvis is not something that needs to be kept rigid.

Your body is adapting to the growth of another human being.

And your nervous system is adapting right along with it.

World Spine Day 2026. Spinal Health for Life

So this October, while we celebrate World Spine Day and think about investing in our spinal health, perhaps pregnant women can hear the message a little differently:

Your changing spine isn't a problem to be fixed.

It is part of a body adapting to an extraordinary new chapter.

Support it.

Move it.

Strengthen it appropriately.

Rest it.

Listen to it.

And give yourself plenty of grace along the way.

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