What does a brown discharge and stomach ach mean ?

Have U been checked?: Abdominal discomfort can be caused by lots of things & may indeed originate outside the GI tract. Further evaluation is in order before anyone can answer "what to do." Your doctor will want to re-examine you as well as know the quality, timing, duration, exact location, associations (eating, position, activity, stooling, urinating). Any chance of pregnancy?