Needing some help please, I’m 17 y/o

So my periods have been 5 days long for the past 3-4 years. This month though, I thought it ended on Thursday, but I’m still bleeding and today has officially been a week! I started last Sunday! Is this normal?! I’m freaking out. Tmi* but I thought it ended because it was brown, and now it’s brown and a dark reddish like it is towards the end of your period with small clots. ☹️