Passing blood clots during your period is usually normal, but it may be a sign of heavy menstrual bleeding. Contact a doctor if your clots are larger than a quarter or if you have heavy bleeding. You ...

Blood clots affect hundreds of thousands each year. How advancements in blood clot treatments may help save lives.

Passing blood clots outside your period can signal hormonal imbalances or medication side effects. Conditions like PCOS, uterine fibroids, or polyps can cause abnormal clotting. All abnormal uterine ...