Dark Brown Discharge?

when i go to use the restroom i look surrounded by my underwear and see lots of dark brown smeared across my underwear im single 12 and have gotten my time before but with the sole purpose once and i havnt gotten it for mabye 2 monthes. Ive bin fealling sick like stoamch hurts and headache mild feaver and occational ache on my back and legs.

what is goin on? You are getting your term again
The dark brown is aged blood / lining of uterus, sometimes this happen when you haven't had a time for a while.
Don't worry its without a flaw normal
its your extent, i get it every two months too