But why is it brown 😟

Victoria

So I had what I thought was my period on August 25th it lasted 7 days.... yesterday i started having brown spotting, and brown blood clots, and what looks like tiny shreds in the toilette when i urinate ... I have NEVER had a period and then another period two weeks later.... I'm stil having the brown discharge and brown clots and it's extremely mucusy.... anyone got any info what this may be???