Initially when I am above to getup noticed burning stomach ache making to run to toilet to poop sometimes its normal some time like diarehea. Then this episodes continuing in afternoon also some days burning feeling or cramps in stomach urgency to pass motion and I end in diarrhea after passing diarrhea having stomach irritation for sometime. If I take bifilac diarrhea is stopping or else continuing again after sometime. This is happening for past 1 week. What could be reason for this ?