Dear Sir, I Have Been Suffering From Gastro Disorder Since

Dear sir,
I have been suffering from gastro disorder since 2 month .with consult my doctor(Gastro medicine) adviced stool test (C-Toxine) but found negetive then medicien entogermina with metrogyle and librax used for one month but still my stool is not improving with greenish and acid smell . Now doctor prescribed RIFAGUT 550 for 10 days 2 times after meal. but still now i am feeling weakness after discharge of stool (Green colour).Please Advice what I do next for . Regards