The most common signs of a miscarriage are vaginal bleeding and cramping pain in the lower abdomen or pelvis. These two symptoms together, especially when bleeding is heavy or increasing, are the strongest signal that a pregnancy may be ending. But bleeding alone doesn’t always mean miscarriage. Up to one in four pregnant people experience some bleeding in the first trimester, and many of those pregnancies continue normally.
What Miscarriage Bleeding Looks Like
Miscarriage bleeding typically starts light, similar to spotting, and gets progressively heavier over hours or days. It can range from brown or dark red to bright red. What distinguishes it from normal first-trimester spotting is that it tends to increase rather than stop on its own, and it often comes with clots.
As a miscarriage progresses, you may pass tissue that looks different from a normal blood clot. What you see depends on how far along the pregnancy is. At around 6 weeks, most people see clots and possibly a small fluid-filled sac about the size of a little fingernail. At 8 weeks, the tissue often looks dark red and shiny, sometimes described as looking like liver, and may contain a small sac about the size of a bean. By 10 weeks, clots tend to be darker and jelly-like, sometimes with what looks like a membrane inside.
Light spotting that stays light, especially without cramping, is less concerning. Many cases of early spotting turn out to be caused by a subchorionic hematoma, a small collection of blood between the uterine wall and the pregnancy sac. This is diagnosed by ultrasound and often resolves on its own.
The Cramping Pattern
Cramping during a miscarriage feels similar to period cramps but is often stronger and more persistent. The pain is usually centered in the lower abdomen or pelvic area and may also radiate to the lower back. In a threatened miscarriage, where bleeding has started but the pregnancy may still be viable, cramps are typically mild or absent. As a miscarriage becomes inevitable, the cramping intensifies and comes in waves, somewhat like contractions.
Pain that is sharp, one-sided, or concentrated in a single spot is a different warning sign. Belly or pelvic pain that starts on one side and gets worse with movement, particularly 6 to 8 weeks after a missed period, can indicate an ectopic pregnancy, where a fertilized egg implants outside the uterus. Shoulder tip pain alongside pelvic pain is another hallmark of ectopic pregnancy. This is a medical emergency.
How Miscarriage Is Confirmed
Symptoms alone can’t confirm a miscarriage. Two main tools are used to determine whether a pregnancy is still viable: ultrasound and blood tests.
On ultrasound, doctors look for a heartbeat and measure the size of the embryo and the gestational sac. A pregnancy is considered non-viable when an embryo measures at least 7 millimeters long with no detectable heartbeat, or when an empty gestational sac measures 25 millimeters or more with no embryo inside. These conservative thresholds exist because earlier guidelines used smaller cutoffs that occasionally misdiagnosed viable pregnancies. If measurements fall in a gray zone, you’ll typically be asked to come back for a repeat ultrasound in one to two weeks.
Blood tests measure levels of hCG, the hormone your body produces during pregnancy. In a healthy early pregnancy, hCG roughly doubles every two to three days. During a miscarriage, hCG drops by about 50% every two days. A single blood draw isn’t enough to tell the difference. Your provider will check levels at least twice, 48 hours apart, to see the trend.
A “missed miscarriage” is worth knowing about because it has no obvious symptoms. The pregnancy stops developing, but bleeding and cramping haven’t started yet. This is usually discovered at a routine ultrasound when no heartbeat is found. Some people notice that pregnancy symptoms like nausea and breast tenderness have faded, but that can also happen in normal pregnancies, so the absence of symptoms alone isn’t reliable.
The Stages of Miscarriage
Miscarriage isn’t a single event. It unfolds in stages, and where you are in that process affects what happens next.
- Threatened miscarriage: You have some vaginal bleeding, possibly with mild cramps, but the cervix is still closed. The pregnancy may still continue. About half of threatened miscarriages do not result in pregnancy loss.
- Inevitable miscarriage: Bleeding and cramping have increased, and the cervix has begun to open. At this point, pregnancy loss will occur.
- Incomplete miscarriage: Some pregnancy tissue has passed, but some remains in the uterus. Bleeding and cramping usually continue until the remaining tissue is expelled or removed.
- Complete miscarriage: All pregnancy tissue has passed. Bleeding and pain begin to subside on their own.
Your provider determines which stage you’re in through a combination of a pelvic exam (checking whether the cervix is open or closed), ultrasound, and your symptom pattern.
When to Go to the Emergency Room
Most miscarriages, while painful and distressing, resolve safely. But certain symptoms signal a complication that needs immediate care. Go to an emergency department if you experience any of the following:
- Heavy bleeding that soaks through two pads in an hour, or you’re passing clots the size of a golf ball
- Severe abdominal pain or shoulder pain
- Fever or chills
- Dizziness or fainting
- Vaginal discharge with an unpleasant smell
Shoulder pain combined with pelvic pain is particularly important because it can indicate internal bleeding from an ectopic pregnancy. Don’t wait to see if it improves.
What Recovery Looks Like
After a miscarriage, bleeding and spotting can last up to two weeks. The heaviest bleeding is usually in the first few days, then tapers gradually. Cramping follows a similar pattern, easing as the uterus returns to its pre-pregnancy size.
Your first period after a miscarriage typically arrives within eight weeks, though it may take a few months for your cycle to settle back to its usual pattern. hCG levels can take several weeks to drop back to zero, which means pregnancy tests may continue to show positive for a while even after the miscarriage is complete. Your provider may monitor hCG levels to make sure they return to baseline, which helps confirm that no tissue remains in the uterus.