Missed Miscarriage: How It’s Diagnosed, and What Happens Next
A gentle, clinically careful guide to what a missed miscarriage means, how ultrasound is used to confirm the diagnosis safely, and the choices and support available afterwards.
A missed miscarriage can be especially difficult to make sense of because it may happen without warning.
There may have been no bleeding, no pain and nothing that felt obviously wrong, and then an ultrasound shows that the pregnancy may no longer be developing.
If you are reading this after a difficult scan, or because something feels uncertain, this guide explains what a missed miscarriage is, how clinicians make the diagnosis carefully, and what may happen next.
Private ultrasound can provide timely assessment and a written report, but it works alongside NHS Early Pregnancy Unit (EPU), GP and gynaecology care rather than replacing it.
What is a missed miscarriage?
A missed miscarriage (sometimes called a silent miscarriage or missed abortion in medical terminology) is a pregnancy that has stopped developing but where the body has not yet begun to pass the pregnancy tissue.
Because there may be no bleeding or cramping, a person can feel physically well and still have a missed miscarriage. This is why it is often found unexpectedly during a routine, dating or reassurance ultrasound.
It is one recognised form of early pregnancy loss. The experience can feel particularly disorienting because the usual symptoms people associate with miscarriage may not be present.
How is a missed miscarriage diagnosed?
Diagnosis relies mainly on ultrasound. In very early pregnancy, a transvaginal ultrasound often provides the clearest images because it allows closer assessment of the gestational sac, embryo and heartbeat. Blood tests such as serum beta-hCG can also be useful in selected situations, particularly when pregnancy location or progression is uncertain, but they do not replace correctly timed ultrasound assessment.
For a transvaginal scan, current NICE guidance includes the following safeguards:
- CRL below 7 mm with no visible heartbeat: a second scan should be performed a minimum of 7 days later before making a diagnosis.
- CRL 7 mm or more with no visible heartbeat: seek a second opinion on viability and/or perform a second scan a minimum of 7 days later before making a diagnosis.
- Mean gestational sac diameter below 25 mm with no visible fetal pole: repeat the scan a minimum of 7 days later before diagnosis.
- Mean gestational sac diameter 25 mm or more with no visible fetal pole: seek a second opinion and/or repeat the scan a minimum of 7 days later before diagnosis.
If the assessment is transabdominal and a heartbeat or fetal pole is not visible, NICE recommends a longer minimum interval of 14 days before diagnosis in the relevant situations.
Clinicians should also avoid using the last menstrual period alone to decide whether a heartbeat ought to be visible, because ovulation and cycle length can vary.
What happens at an early pregnancy scan?
Before the ultrasound, the sonographer will ask about your dates, symptoms, previous pregnancies, fertility treatment if relevant, and any earlier blood-test or scan results.
In early pregnancy, a transvaginal scan may be recommended because it usually gives more detail. The examination should be explained first and performed with your consent. If you prefer a transabdominal scan, that can be discussed, although a full bladder is often needed and the images may be less detailed at very early gestations.
The sonographer will assess the location of the pregnancy, the gestational sac and yolk sac where visible, measure the embryo when present, and look for a heartbeat when it would be appropriate to see one. Representative images and measurements are saved for the report.
If the findings are genuinely too early or uncertain, the correct next step may be a repeat scan rather than a definite diagnosis.
Recommended read: What to expect from an early pregnancy scan.
What are the options after a missed miscarriage?
Once miscarriage has been confirmed and you are medically stable, there are three recognised approaches. The right option depends on your symptoms, gestational age, medical history, risk of bleeding or infection, and your preferences.
| Approach | What it means | Points to discuss |
|---|---|---|
| Expectant management | Waiting for the pregnancy tissue to pass naturally. | NICE generally uses a 7–14 day period as first-line management after a confirmed miscarriage when clinically appropriate. It avoids medication or a procedure but may take time and may not complete. |
| Medical management | Medication is used to help the uterus pass the pregnancy tissue. | For missed miscarriage, NICE recommends mifepristone followed by misoprostol. Your treating team explains what to expect, pain relief, bleeding and follow-up. |
| Surgical management | Pregnancy tissue is removed using a procedure such as manual vacuum aspiration or surgical evacuation. | This may be preferred or recommended depending on bleeding, infection risk, medical circumstances or personal preference. |
Swipe horizontally to view the full table.
These decisions are made with your NHS Early Pregnancy Unit or gynaecology team. A private ultrasound clinic can provide imaging findings and a report promptly, but miscarriage treatment and procedural care should be coordinated through the appropriate treating service.
Looking after yourself, and future pregnancies
A missed miscarriage is a pregnancy loss, and people respond to it in different ways. Clear explanations, time to make decisions and emotional support can all matter.
Your GP, Early Pregnancy Unit or gynaecology team can advise on physical recovery and whether any follow-up is needed. After a single miscarriage, extensive investigation is not always required; decisions about testing depend on your individual history and whether losses are recurrent.
If and when you feel ready for another pregnancy, some people find an early reassurance scan helpful. It cannot prevent miscarriage, but it can provide information about pregnancy location, dating and development at an appropriate stage.
When should you seek urgent medical care?
Do not wait for a scheduled private scan if you have symptoms suggesting significant bleeding, infection or an ectopic pregnancy.
- Heavy vaginal bleeding or bleeding that is rapidly increasing.
- Severe or worsening abdominal or pelvic pain.
- Shoulder-tip pain, particularly with abdominal pain or bleeding.
- Dizziness, fainting, collapse or marked weakness.
- Fever or feeling acutely unwell.
In these situations, seek urgent NHS assessment through your Early Pregnancy Unit, maternity service, NHS 111, A&E or emergency services according to the severity of your symptoms.
Book an early pregnancy scan with London Private Ultrasound
If you want early reassurance, have uncertain dates, have had worrying news or need a careful ultrasound assessment, London Private Ultrasound offers early pregnancy scans in Central London and St Albans.
The early pregnancy service is available from 6 weeks and currently costs £149. The Reassurance Pregnancy Scan for 6–17 weeks is also currently £149. Reports are provided on the same day and can be shared with your GP, midwife or Early Pregnancy Unit.
Frequently Asked Questions
Can you have a missed miscarriage with no symptoms?
Yes. A missed miscarriage can happen without bleeding or cramping because the body has not yet begun to pass the pregnancy tissue. Many are discovered during a routine, dating or reassurance scan when the person feels physically well.
How is a missed miscarriage confirmed?
Ultrasound, usually transvaginal in very early pregnancy, is central to diagnosis. NICE advises caution before confirming miscarriage from a single early scan. If there is no heartbeat or no visible embryo, the next step depends on the crown–rump length or mean gestational sac diameter; a second opinion and/or a repeat scan after the recommended interval may be needed before a diagnosis is confirmed.
Why have I been told to come back for another scan?
Because it may be too early to be certain. Dates based on the last menstrual period can be inaccurate, and an early but normally developing pregnancy can sometimes look similar to a pregnancy that has stopped developing. A correctly timed repeat scan reduces the risk of a premature diagnosis.
What are the treatment options after a missed miscarriage?
For a confirmed miscarriage, the recognised approaches are expectant management (waiting), medical management with medication, and surgical management. NICE recommends discussing the options, risks and preferences with the treating Early Pregnancy Unit or gynaecology team so that the plan is appropriate for the individual situation.
Will a missed miscarriage affect my chances of getting pregnant again?
For most people, one miscarriage does not mean that a future pregnancy will also miscarry. Whether any investigations are appropriate depends on your history, age, medical factors and whether losses are recurrent. Your GP or gynaecology team can advise if further assessment is needed.
When should I seek urgent medical care?
Seek urgent medical assessment rather than waiting for a routine private scan if you have heavy bleeding, severe or worsening abdominal or pelvic pain, shoulder-tip pain, fainting, marked dizziness, collapse, fever, or feel acutely unwell. These symptoms can occur with significant bleeding, infection or an ectopic pregnancy.
Clinical guidance: Reviewed against NICE NG126: Ectopic pregnancy and miscarriage — diagnosis and initial management, last updated 17 June 2026.
Need clarity in early pregnancy?
Book a careful early pregnancy ultrasound from 6 weeks, with findings explained clearly and a same-day written report. Private scanning complements, rather than replaces, NHS maternity and Early Pregnancy Unit care.
Book Early Pregnancy Scan · £149