Black period blood is usually just old blood that's lingered in your body for a long time. This most likely happens during low-flow days at the start or end of your period. As blood sits in your uterus, it oxidizes, causing the color change from red to brown and eventually black.
However, some causes of dark clots include:
- Fibroids: Benign tumors in the uterus that can cause heavy bleeding and clotting.
- Pelvic Inflammatory Disease (PID): An infection of the reproductive organs that can lead to pain, fever, and abnormal discharge.
- Hormonal Imbalances: Changes in hormone levels can affect your period flow and color.
Other possible causes of black period blood include:
- Retained Menses (Hematocolpos): A blockage prevents menstrual blood from leaving the uterus, causing it to accumulate and become dark.
- Cervical Cancer: Though rare, black discharge can sometimes be a symptom of cervical cancer.
It's important to note that black period blood isn't always a cause for concern. If you experience black blood only at the beginning or end of your period, it's most likely nothing to worry about. However, if you have other symptoms like pain, fever, or abnormal bleeding, it's best to see a doctor for evaluation.
