Pelvic ultrasound scan

A scan using sound waves to look at the womb, ovaries and pelvis, done over the tummy with a full bladder, internally with a slim probe, or both.

✓ Medically reviewed by a GMC-registered consultant · last reviewed September 2026 · next review September 2027 · how we review

In short

It uses sound waves (no radiation) to look at the womb, ovaries and pelvis, externally over the tummy, internally with a slim probe, or both.
The internal (transvaginal) scan gives the clearest view of the womb lining and ovaries and is usual for many gynaecology questions.
It shows structure well but cannot always say whether a finding is harmless or serious, so further tests are sometimes needed.
A normal scan is reassuring but does not rule out every condition; persistent symptoms should still be reviewed.

A plain-English summary. The detail — including risks and recovery — is below.

At a glance

TypeUltrasound imaging of the pelvis

AnaestheticNot needed

How long it takesAbout 15–30 minutes

Hospital stayOutpatient — no hospital stay

Time off workUsually none

When you'll see resultsSometimes discussed on the day; a full report often follows within days

On the NHS?Commonly available on the NHS when clinically needed; also available privately

A general guide. Your radiologist will give you advice for your situation.

Best fit

Gives a clear view of the womb, ovaries and womb lining without radiation

Pause if

Ultrasound is not the best test for every pelvic problem — some conditions are better seen on MRI or with a camera test (hysteroscopy or laparoscopy).

Main recovery point

You may feel pressure from a full bladder, and mild pressure during the internal scan, but it should not be painful. You can ask to pause or stop at any...

Good aftercare

A clear explanation of what the scan showed and what it did not.

During the scan

You may feel pressure from a full bladder, and mild pressure during the internal scan, but it should not be...

Straight afterwards

You can empty your bladder and go straight back to your day. A little spotting after the internal scan is normal...

Getting results

Some findings may be mentioned on the day. Often a full report is sent to the referring doctor within days, who...

If something is found

If the scan shows something that needs further checks, you will be told what the next steps are, which might be a...

Medical line illustration of ovarian cyst gynaecology for Pelvic ultrasound scan. — Illustration only - not a diagnosis, medical advice or a promise of result. Your anatomy and treatment plan may differ. Vuemedics does not publish before-and-after photos.

What is a pelvic ultrasound scan?

A pelvic ultrasound scan uses sound waves to create pictures of the organs in your pelvis — mainly the womb (uterus), ovaries, and the lining of the womb. It uses no radiation and is generally usually not painful.

There are two ways of doing it. A transabdominal scan is done by moving a probe over your lower tummy, usually with a full bladder, which helps create a clear view. A transvaginal (internal) scan uses a slim probe, about the size of a tampon, gently placed in the vagina to give a closer, more detailed view, especially of the womb lining and ovaries. Often both are done in the same appointment.

It is used to look into symptoms such as pelvic pain, heavy or irregular periods, bleeding after the menopause or between periods, or problems conceiving, and to check things like fibroids, ovarian cysts and the womb lining. In early pregnancy it is used to find and check the pregnancy.

A scan is good at showing the structure of these organs, but it does not explain everything. It cannot, on its own, tell whether a finding is harmless or serious, and sometimes further tests are needed. A normal scan is reassuring but does not rule out every problem.

Types, options & approaches

There may be different ways to do this. The right approach depends on the clinical question and your circumstances.

Transabdominal (over the tummy) scan

Gel is applied and a probe is moved over your lower tummy, usually with a comfortably full bladder, which acts as a 'window' to see the pelvic organs. It gives a good overall view and is non-invasive.

Transvaginal (internal) scan

A slim, covered probe, about the size of a tampon, is gently placed in the vagina with an empty bladder. It sits close to the womb and ovaries and gives a much clearer, more detailed picture. A chaperone is offered and you can pause or stop at any time.

Combined scan

Many appointments use both: the tummy scan for an overall view, then the internal scan for detail. You will be told if both are planned and why.

Specialist or follow-up scans

Sometimes extra techniques are added, such as colour Doppler to look at blood flow, or a repeat scan at a different point in your cycle, to answer a specific question.

External versus internal scan

Type	Bladder	Best for
Over the tummy	Full bladder	Overall view; larger structures; preferred by some
Internal (vaginal)	Empty bladder	Close detail of womb lining and ovaries
Both together	Full then empty	A complete picture when detail is needed

The internal scan is usually more detailed, but it is your choice. Tell the team if you would prefer not to have it, and they will do their best with the external scan.

Preparing for your scan

For the external (tummy) part, you are usually asked to drink water beforehand and arrive with a comfortably full bladder; for the internal scan you empty your bladder first.
Wear a two-piece outfit so you can easily undress from the waist down for the internal scan if needed.
You can have the scan during a period; for an internal scan you would be asked to remove a tampon or menstrual cup first.
Tell the team if you are or might be pregnant, as this changes what the scan is looking for.
If you have found internal examinations difficult before, have had vaginal surgery, or feel anxious, tell the team — the scan can be adjusted.
A chaperone is offered for the internal scan, and you can bring someone with you.
Bring details of your symptoms, periods and any previous scans or treatments.

What happens

You will usually have the external part first: you lie down, gel is put on your lower tummy, and the sonographer moves a probe over the skin to look at your pelvic organs while your bladder is full. This is usually not painful, though a full bladder can feel uncomfortable.

For the internal scan, you empty your bladder, then a slim probe — covered with a protective sheath and lubricated — is gently placed a short way into the vagina. It is similar to having a smear test and should not be painful unless you are already sore. A chaperone is offered, and you can ask the sonographer to stop at any point.

The sonographer looks at the womb, its lining, the ovaries and the surrounding area, and takes measurements and images. Depending on local practice, they may tell you some findings on the day, or the images may be reviewed and a report sent to the doctor who referred you, who then discusses the results with you.

Is this scan right for me?

A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.

May not be suitable if…

Ultrasound is not the best test for every pelvic problem — some conditions are better seen on MRI or with a camera test (hysteroscopy or laparoscopy).
A scan alone cannot diagnose conditions such as endometriosis reliably, which may be present despite a normal scan.
It is not a substitute for urgent assessment of severe pain, heavy bleeding, or possible ectopic pregnancy.
A private 'reassurance' scan is not a screening test for cancer and should not be treated as one.

Delay or rearrange if…

You have urgent symptoms that need emergency care rather than a booked scan.
A scan at a particular point in your menstrual cycle would give a clearer answer for your specific question.
You are not ready for an internal scan and want to discuss alternatives first.
Relevant information, such as your symptoms or previous results, is not yet available to guide the scan.

Alternatives to discuss

No scan, with clinical review and watchful waiting, if symptoms are mild.
MRI for more detail on certain conditions.
Hysteroscopy to look directly inside the womb, or laparoscopy for conditions such as endometriosis.
Blood tests or other investigations depending on the suspected cause.

Before you decide

Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.

What matters most to me?

Think about symptoms, daily life, work, caring responsibilities, sport, fertility, travel, appearance and anxiety — the right choice depends on your priorities, not just the medical facts.

What are all my options?

Ask about waiting, monitoring, medicines, rehabilitation, a smaller or larger procedure, a different test, NHS referral, or a second opinion where that would help.

What would make me pause?

Active infection, pregnancy, unstable medical problems, smoking, medicines that increase bleeding, poor support at home, or feeling pressured are all reasons to slow down and get tailored advice.

What happens if I do nothing today?

For some problems, waiting is safe; for others, delay can make treatment harder. A good consultation should explain the trade-off in plain English.

Benefits

Gives a clear view of the womb, ovaries and womb lining without radiation
Helps find causes of pelvic pain, abnormal bleeding or fertility problems
Can detect fibroids, ovarian cysts and changes in the womb lining
Is generally quick, usually not painful and well tolerated
Can guide whether further tests or treatments are needed
In early pregnancy, helps locate and check the pregnancy

Risks & complications

More common

Discomfort from a full bladder before the external scan
Mild pressure or awkwardness during the internal scan, though it should not be painful
Anxiety before the scan or while waiting for results
Finding something that needs further tests to understand

Less common

A small amount of spotting after the internal scan, especially if you were already bleeding
An unclear result that needs a repeat scan or a different test
An incidental finding unrelated to your symptoms that needs follow-up

Rare but serious

A finding that turns out to be serious, such as a suspicious ovarian mass, needing prompt specialist care
A normal scan that misses a condition the scan cannot show well, so symptoms must still be taken seriously

Ultrasound itself is very low risk and uses no radiation. The main limitations are interpretive: a scan shows structure but cannot always tell whether a finding is harmless or serious, and it cannot detect every condition. If your symptoms continue despite a normal scan, ask what else could be causing them and whether further tests are needed.

Published figures to discuss

Ultrasound is very safe and uses no radiation, so physical risk is minimal. The important issues are interpretive: how clearly a structure can be seen depends on the approach used, body habitus and the condition itself, and ultrasound cannot detect every problem. False reassurance is the main pitfall to guard against.

Figure	Reported range	How to interpret it	Source / confidence
Physical harm from pelvic ultrasound	Very low; no ionising radiation	Transvaginal ultrasound may be uncomfortable or embarrassing, but should not be painful; you can ask to stop.	Guide sourcesClinical context
A normal scan missing a condition	Recognised limitation	Endometriosis, small adhesions, early inflammatory disease and some causes of pain may be present despite a normal scan.	Guide sourcesClinical context
Incidental or indeterminate finding	Common enough to plan for	Simple cysts or unclear findings may need repeat ultrasound, MRI, blood tests or specialist review.	Guide sourcesClinical context
Need for repeat scan	Common in selected findings	Timing in the menstrual cycle can matter, especially for cysts or endometrial thickness.	Guide sourcesClinical context

These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.

What happens afterwards

There is no physical recovery from a pelvic ultrasound. The main thing afterwards is understanding the result, knowing whether anything further is needed, and getting your questions answered.

During the scan

You may feel pressure from a full bladder, and mild pressure during the internal scan, but it should not be painful. You can ask to pause or stop at any time.

Straight afterwards

You can empty your bladder and go straight back to your day. A little spotting after the internal scan is normal if you were already bleeding.

Getting results

Some findings may be mentioned on the day. Often a full report is sent to the referring doctor within days, who then discusses it with you.

If something is found

If the scan shows something that needs further checks, you will be told what the next steps are, which might be a repeat scan, blood tests, or a specialist referral.

What's normal — and not a worry

Relief at emptying a full bladder after the external scan
Mild, brief awkwardness during the internal scan that quickly passes
A little spotting afterwards if you were already bleeding
Waiting a few days for a full report in many cases
No physical after-effects from the scan

Aftercare

Make sure you know how and when you will get your results, and who will explain them.
Ask what the scan did and did not show, and whether any further tests are needed.
If you had symptoms, keep track of them and report any that continue or worsen.
Attend any repeat scan or follow-up that is arranged.
If you are bleeding, use pads rather than tampons until advised otherwise.
Raise any anxiety about the findings with the team or your GP.
Keep a copy of your report if offered, especially before a specialist appointment.

Before your scan

Water to drink beforehand for a full bladder (if asked)
A two-piece outfit for easy undressing
A note of your symptoms, periods and previous scans
Knowledge that a chaperone is available for the internal scan
Clarity on how and when you will get results
Pads (not tampons) if you are bleeding
Any questions written down for the team or referring doctor

⚠ Get urgent help if…

Severe or worsening pelvic or tummy pain after the scan
Heavy vaginal bleeding rather than light spotting
A high temperature, feeling unwell, or a smelly discharge (possible infection)
Feeling faint or very unwell
If you are pregnant: severe one-sided pain, shoulder-tip pain, faintness or heavy bleeding — call 999 or go to A&E
Any new symptom that worries you while waiting for results

Who to contact: your clinician, clinic or test provider first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.

General guidance — it doesn't replace the specific advice your radiologist gives you.

Results & realistic expectations

A normal scan means the womb, ovaries and womb lining look as expected, with no obvious cause for your symptoms found. This is reassuring, but it does not rule out every condition — some problems are not visible on ultrasound, and symptoms can have causes the scan cannot show.

If the scan finds something, such as a fibroid, an ovarian cyst, or a thickened womb lining, this often needs putting in context: many findings are common and harmless, while some need further tests or treatment. The doctor who arranged the scan will explain what your result means for you and what, if anything, happens next.

How long it lasts

A scan reflects your pelvis at that moment. Some findings, such as small cysts, are checked again later to see if they change, while others may not need any follow-up. If your symptoms continue or come back, the scan may need repeating, or a different test may be more useful. A past normal scan does not mean new symptoms can be ignored.

Related tests, treatments or support

A pelvic ultrasound is often combined with blood tests (for example hormone levels or markers), a clinical examination, or, depending on the question, further imaging such as MRI, or a hysteroscopy to look inside the womb. In early pregnancy it is part of an early pregnancy assessment.

Follow-up & long-term care

Follow-up depends on what is found and who referred you. You may be reassured and discharged, asked to return for a repeat scan to monitor a finding, or referred for further tests or to a specialist. You should know how to get your results and who to contact if your symptoms change in the meantime.

Repeat, follow-on and what comes next

A repeat scan is often used to watch a finding, such as a cyst, over time.
An unclear result may need a different test, such as MRI or hysteroscopy.
Symptoms that persist despite a normal scan should prompt further assessment.
Findings sometimes change with the menstrual cycle, so timing can matter.

Ask what happens if the result is unclear or needs repeating, and what is included if further tests or follow-up are needed.

What good aftercare looks like

A clear explanation of what the scan showed and what it did not.
A defined route to results and someone to explain them.
Prompt follow-up or referral if a finding needs further tests.
Advice to return if symptoms continue despite a normal scan.
A copy of the report where appropriate, especially before a specialist appointment.

What affects the cost

Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:

Whether the scan is on the NHS (when clinically indicated) or arranged privately
Whether an external scan, internal scan, or both are done
Whether extra techniques (such as Doppler) or a specialist scan are needed
Who reports the scan and how quickly the report is provided
Any follow-up consultation to explain the results
Whether a repeat scan or further imaging is required

Make sure your written quote includes

Whether the external scan, internal scan, or both are included
Who reports the scan and how soon you will get results
Whether a consultation to explain the report is included
What happens, and what it costs, if a repeat or further scan is needed
What happens if the scan finds something needing specialist referral
Whether a copy of the report is provided to you

On the NHS? Pelvic ultrasound is commonly available on the NHS when clinically indicated; private scans are also available for speed or convenience, but a clear reason and proper reporting matter most.

You're entitled to your total cost in writing — including reports, follow-up and what happens if the result is inconclusive — before you decide.

Choosing a specialist safely

Check the radiologist is on the GMC Specialist Register for this area.
Make sure they work at a CQC-registered service, and look for membership of the relevant Royal College or professional body.
You're entitled to time to consider and to have your questions answered before you agree — the radiologist who looks after you should explain it, not a salesperson.
Be wary of pressure: time-limited offers or deposits taken before you've had time to think are red flags, not bargains.
You're entitled to your total cost in writing — including any follow-up — before you decide.

How Vuemedics verifies every consultant →

Questions to ask your medical professional

Take this to your consultation. A good radiologist will welcome every one of these.

Will I have the external scan, the internal scan, or both, and why?
What is the scan looking for in my case?
What did the scan show, and does any finding need further tests?
If the scan is normal but my symptoms continue, what happens next?
How and when will I get my results, and who will explain them?
Is a different test, such as MRI or hysteroscopy, more suitable for my problem?
Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
Will you be the radiologist who carries out my scan, and who looks after me afterwards?
What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
What does a realistic result look like — and what can this scan not achieve?
What are my options, including waiting, doing nothing for now, or choosing a different approach?
Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
What is the total cost in writing, including any follow-ups, and how much time do I have to decide?

Frequently asked questions

Does the internal scan hurt?

It should not hurt. The probe is about the size of a tampon and is placed gently; it feels similar to a smear test. You may feel some pressure. You can ask the sonographer to stop at any time, and a chaperone is offered.

Why do I need a full bladder?

For the scan over your tummy, a full bladder pushes the bowel out of the way and creates a clear 'window' to see the womb and ovaries. You empty your bladder before the internal scan, which does not need it.

Can I have the scan during my period?

Yes, you can usually have a pelvic ultrasound during a period. For the internal scan you would be asked to remove a tampon or menstrual cup first. Tell the team if you would prefer to rearrange.

Can I refuse the internal scan?

Yes. The internal scan is your choice. If you would rather not have it, tell the team, and they will do their best with the external scan, though it may give less detail. Your comfort and consent matter.

Does a normal scan mean nothing is wrong?

Not necessarily. A normal scan is reassuring, but ultrasound cannot show every condition, and some causes of symptoms are not visible. If your symptoms continue, ask what else could be responsible and whether further tests are needed.

Is it available on the NHS?

Yes. Pelvic ultrasound is commonly available on the NHS when there is a clinical reason. Some people choose a private scan for speed or convenience, but a referral and clear reason help make sure the right scan is done and explained.

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How we made this page

Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →

Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.

Sources & standards: NHS — Ultrasound scan Guy's and St Thomas' NHS — Transvaginal ultrasound scan Cambridge University Hospitals NHS — Pelvic (gynaecological) ultrasound Royal College of Radiologists — about ultrasound imaging RCOG — information for the public

Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.

Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.