Why am i getting a blackish, brown discharge 2 weeks after my extent?

i'm 17, and not taking any pills or anything, and for the past 2 days, i've be getting this brown, almost blackish discharge. what is going on?Why am i getting a blackish, brown discharge 2 weeks after my extent?
That is called break through bleeding. You are probably ovulating. It happen. If it happens regularly, you might want to see a gyno, but it is usually not a sign of anything except some hormonal issues. Nothing scary.
That definately is not conventional, you need to see a doctor.
Could you be pregnant?
It may be feeble blood but it wouldnt be blackish/brown
I would go see a doctor and go and get yourself checked out
PERIOD IS PROB NOT OVA