Brown blood?

So my period was 16 days late this month and when it finally decided to show up it started super light and was brown. Then it got more regular. It got really light and then I thought it ended. But for like the past week, I’ve been having dark brown and black blood or discharge and it’s like flakey. Like there are tiny chunks. Is this something I need to go to a doctor about?

Also side note, my period was like 2 weeks long. It’s normally half that.