Abnormal uterine bleeding is irregular bleeding from the uterus. It may be bleeding that is heavier, lighter, or lasts longer than your usual period. Or it may be bleeding that doesn't occur at your regular time. For example, you may have heavy bleeding during your period or in between periods. Let your doctor know if your bleeding is different than usual. They can check for problems.

Bleeding during pregnancy is a different problem. If you are pregnant and have any amount of bleeding from the vagina, be sure to tell your doctor.