A missed miscarriage is a pregnancy loss with few or no symptoms, usually found at a scan. Here are the signs, why it happens, and your options, explained gently.
A missed miscarriage is when a pregnancy has stopped developing but your body hasn’t yet passed it, so there’s often no bleeding and no pain. It’s also called a silent miscarriage. Many women still feel pregnant, and the loss is only discovered at a routine ultrasound, when there’s no heartbeat or the baby hasn’t grown as expected. Signs, when they appear, can include fading pregnancy symptoms or brown spotting, but symptoms alone can’t tell you whether a pregnancy is healthy. Most missed miscarriages are caused by a chance chromosome problem, not by anything you did. There are three main options for what happens next, and you usually have time to choose.
What is a missed miscarriage?
In a missed miscarriage, the embryo or fetus stops growing, or never develops, but the pregnancy tissue stays in the uterus. The placenta can keep making pregnancy hormones for a while, which is why the body may carry on as if still pregnant. It most often happens in the first 12 weeks.
Missed miscarriage symptoms
Many women have no symptoms at all. When signs of a missed miscarriage do appear, they can include:
- Pregnancy symptoms fading, such as less nausea or breasts no longer feeling tender
- Brown spotting or discharge
- Mild cramping
- No longer “feeling pregnant”
An important caution: pregnancy symptoms naturally come and go, and they often ease toward the end of the first trimester in healthy pregnancies. Light spotting is also common in healthy pregnancies. Only an ultrasound or blood tests can tell what’s happening. If you’re worried, call your doctor or midwife rather than waiting.
Signs of missed miscarriage on progesterone
If you’re taking progesterone, for example after fertility treatment, it can keep breast tenderness and other symptoms going and delay bleeding, even if the pregnancy has stopped. That makes a missed miscarriage even harder to notice. Don’t stop progesterone on your own; your clinic will advise you after a scan.
How it’s diagnosed
A missed miscarriage is diagnosed by ultrasound, often a vaginal scan in early pregnancy. Doctors look for a heartbeat and measure the size of the embryo and pregnancy sac. Because dates can be off, if things are unclear they’ll usually repeat the scan in one to two weeks before confirming a loss. Blood tests for hCG may help too. Without a scan, a missed miscarriage can go undetected for weeks, until bleeding starts or a routine ultrasound is done.
Blighted ovum
A blighted ovum, also called an anembryonic pregnancy, is one type of missed miscarriage. A pregnancy sac forms but an embryo doesn’t develop inside it. Because the sac still makes hCG, pregnancy tests stay positive and you may feel pregnant. It’s found on ultrasound, and it’s managed in the same ways as other missed miscarriages.
Missed miscarriage causes
Most early miscarriages, including missed ones, are caused by chromosome problems that happen by chance as the pregnancy forms. The chance rises with age, especially after 35. Less often, causes include thyroid problems, uncontrolled diabetes, differences in the shape of the uterus, or blood-clotting conditions. Exercise, sex, work, lifting or ordinary stress don’t cause miscarriage.
Your options
If you’re well, there’s usually no rush. You can talk through these choices with your doctor:
| Option | What happens | Good to know |
|---|---|---|
| Waiting | Letting the body pass the pregnancy naturally | Can take days to weeks; timing is unpredictable |
| Medicine | Tablets (misoprostol, sometimes with mifepristone first) that help the uterus empty | Usually at home; expect cramps and heavy bleeding for a few hours |
| Procedure | Gentle suction to remove the tissue (a D&C or vacuum aspiration) | Quick and predictable; done in a clinic or hospital |
All three are safe and effective for most women. Your doctor may check afterwards that the uterus has emptied.
When to get urgent care
- very heavy bleeding, soaking a pad every hour for two hours or more
- severe pain, especially on one side, or shoulder-tip pain
- fever, chills or foul-smelling discharge
- dizziness or fainting
Your feelings matter
Finding out at a scan, often when you expected to see a heartbeat, can be a deep shock. Many women feel numb, confused or betrayed by a body that “didn’t tell them.” All of this is normal. Take the time you need, lean on people you trust, and consider a pregnancy-loss support group or counselor.
When you’re ready, our guides to your first period after a miscarriage and getting pregnant after miscarriage explain what comes next.
Reviewed October 2026. Author: Qingcai Wang, MD, PhD, founder of Five Essences. General education only; continue your medical care.
Sources: ACOG: early pregnancy loss; NHS, miscarriage; Cleveland Clinic, missed miscarriage.