Throughout your menstrual cycle, the color and consistency of blood can change. It can be thin and watery one day, and thick and clumpy the next.
This video explains the reasons why your period blood might be brown.
Why is my period brown?
Brown Period Blood? A Doctor Tells Us Why Our Blood Is This ColorHelloGiggles
Why Is My Period Blood Brown?
Dark Brown Discharge Instead of Period Blood - Why?
Why is my period blood brown? An expert explains all
What can cause period blood to look brown? - Quora
Most Accurate Implantation Bleeding or Period Quiz
What is the main reason for brown period blood? - Quora
Period blood chart: What does the blood color mean?
Why your period blood is brown on the first day