Bleeding early in pregnancy
ACOG says bleeding in the first trimester happens in 15 to 25 in 100 pregnancies, and is often not a major problem.[1] It says spotting can happen at implantation, 1 to 2 weeks after fertilization, and after sex or a pelvic exam.[1]
MedlinePlus says some people spot in early pregnancy and do not miscarry, but any bleeding should prompt a call to a provider.[2]
ACOG lists infection, early pregnancy loss and ectopic pregnancy among early causes.[1] It says bleeding with belly, pelvic or shoulder pain can be a sign of ectopic pregnancy, so call right away.[1]
Bleeding later in pregnancy
ACOG says bleeding later in pregnancy can be more serious, and heavy bleeding may be a problem with the placenta.[1] It says to contact your provider right away or go to the hospital for any bleeding late in pregnancy.[1]
The NHS says to call your midwife or doctor right away for severe pain or bleeding from the vagina.[3]
ACOG says that before 37 weeks, signs of preterm labor include a change in discharge, pelvic pressure, a constant dull low backache, mild cramps, regular contractions and the water breaking.[1]
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CDC lists urgent warning signs to watch for during pregnancy and in the year after birth, including:[4]
- vaginal bleeding or leaking fluid;[4]
- severe belly pain that does not go away;[4]
- dizziness or fainting;[4]
- a fever of 100.4°F (38°C) or higher;[4]
CDC also lists vaginal bleeding or discharge after pregnancy as an urgent warning sign.[4]
Questions families ask
Is light spotting normal in early pregnancy?
ACOG says early bleeding is common and often not a major problem, but to contact your provider about any bleeding.[1]
When is bleeding an emergency?
ACOG says to call right away for bleeding with belly, pelvic or shoulder pain, and to go to the hospital for any bleeding late in pregnancy.[1]
Free from UpOnly Learning. Written for families of every faith. No outside ads and no affiliate links. Every fact on this page comes from the sources listed below. How we source and review these pages
Updated 2026-10-24: first published.
Sources
All sources were opened and checked on the date shown.
- American College of Obstetricians and Gynecologists. Bleeding During Pregnancy. Checked October 24, 2026.
- MedlinePlus (National Library of Medicine). Miscarriage. Checked October 24, 2026.
- NHS (United Kingdom). 22 weeks pregnant guide. Checked October 24, 2026.
- Centers for Disease Control and Prevention (HEAR HER campaign). Urgent Maternal Warning Signs and Symptoms. Checked October 24, 2026.