<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hello doctor, I am 28 years old female.I have been suffering from some kind of stomach problems since 3 years.At first I thought it was stomach infection but it has been reccurring every few months.Symptoms include blackish stool with mucus and chewing gum like texture..sometimes accompanied with blood..stomach pain especially after passing stool,burping sound in stomach and lot of weakness...Reports of stool test,colonoscopy and ct scan of abdomen were normal.I have taken many medicines like rifagut 400, providac,gutrex-d,colirid,lesuride, colaspa,secnil forte,pantocid d,glevo 500 etc during this period..after 10-15 days it becomes ok but reoccurs every few months...what should I do?  <response>: Dear Friend. Welcome to Chat Doctor. I am Chat Doctor. I have read your query in detail. Furthermore, I understand your concern. I would suggest you to get the following:1. Stool Examination2. IGA Anti TTG Antibody to rule out celiac disease. Also avoid outside food and water. If you dont get fine and investigations come out to be normal, write to us again. We would keep Irritable Bowel Syn Chat Doctor. This is my best advice for you with the available details, if you have any further query, please ask us. Stay Healthy 