Abnormal bleeding is irregular bleeding from your uterus that lasts longer or is heavier than your usual periods. Bleeding in between periods would also be considered unusual.
Many conditions can cause abnormal bleeding. Sometimes, it's because of changes in your hormone levels. Or it could be due to a growth in your uterus or blood clotting problems. Sometimes, the cause of abnormal bleeding is hard to determine.
If you start bleeding during pregnancy, that's a different problem. You should contact your obstetrics provider at Dekalb Women's Specialists immediately if you're pregnant and have any amount of vaginal bleeding.