Miscarriage Symptoms and When to Get Help

The symptoms of early pregnancy loss are vaginal bleeding, cramping in the lower abdomen, low back pain, and passing fluid, tissue, or clot-like material. NICHD’s instruction for any of them is to contact your provider immediately. If you are bleeding right now, that is the action — the rest of this page explains what happens next and what the numbers actually say.

Bleeding early does not mean the pregnancy is over

This is the part that gets lost. About 25% of pregnancies have some vaginal bleeding during the first trimester, and estimates of how many of those go on to a loss range from 12% to 57% depending on the study population. In other words: a large fraction of people who bleed early stay pregnant. When bleeding happens before 20 weeks with a closed cervix and a viable embryo, the clinical name for it is a threatened miscarriage — a description of a situation, not a prediction.

That is also why nobody, including you, can read the outcome from the symptom. An ultrasound can.

Symptoms of early pregnancy loss

• Vaginal bleeding, from light spotting to heavy flow, sometimes with clots
• Cramping or pain in the lower abdomen, dull, sharp, or period-like
• Low back pain
• Fluid or tissue passing from the vagina
• Pregnancy symptoms regressing, such as nausea or fatigue easing — a soft sign that also happens in perfectly healthy pregnancies

Get emergency care for these

Do not wait for an appointment if any of the following is present:

• Soaking more than one pad per hour for two consecutive hours
• Severe abdominal pain that does not let up
• Dizziness, fainting, or a racing heart — possible signs of significant blood loss
• A fever of 100.4°F (38°C) or higher, especially with foul-smelling discharge, which can indicate infection
• One-sided pelvic pain with bleeding, which raises the question of an ectopic pregnancy

NICHD also advises calling 911 for fever, severe lower abdominal pain, or foul-smelling discharge occurring more than 24 hours after a miscarriage.

How common it is, and why it happens

Roughly 10% to 20% of clinically recognized pregnancies end in early loss; MedlinePlus gives 10% to 25% among women who know they are pregnant, and notes that most losses happen during the first 7 weeks. Counting from conception rather than from a positive test, studies tracking daily hormone levels estimate that about 38% of all conceptions do not continue.

The cause, in more than 60% of losses between 6 and 10 weeks, is a chromosomal abnormality in the embryo. These are errors of cell division, not consequences of stress, a heavy bag, a workout, or an argument.

What evaluation looks like

Transvaginal ultrasound is preferred for first-trimester pregnancies: it establishes where the pregnancy is, and whether there is cardiac activity. Alongside it come quantitative hCG, blood type and Rh status — Rh status matters because Rh-negative patients may need immune globulin — and hemoglobin if there has been significant bleeding. Management afterward may be expectant, medical, or surgical, and that choice is made case by case.

Afterward

Grief after an early loss is not proportional to the number of weeks. Support from a partner, family, or a mental health professional is part of the care, not an extra. Most people who experience one loss go on to have a normal pregnancy.

For the wider set of symptoms that call for urgent evaluation at any point in a pregnancy, see high-risk pregnancy signs; for the ordinary arc of symptoms, see pregnancy symptoms.

This content is informational and does not replace medical consultation, diagnosis, or treatment. Any bleeding during pregnancy should be evaluated by a clinician.