Hi.
Thanks for your query.
Noted the history and understood your concerns.
The causes of pain in abdomen, loose stools with food particles particularly after food, fullness, incomplete evacuation and growling stomach can be due to the following reasons.
Intestinal infection has been ruled out by stool and blood tests.
Colonoscopy has ruled out any pathology.
Hence the cause can be
irritable bowel syndrome that is IBS.
I would advise you the following in such a situation:
Get an opinion of a Gastroenterologist.
Ask for
CT scan of the whole abdomen and have other tests as needed.
If all the tests are negative this is most probably IBS and
buscopan alone will not help, you will need additional medicines for treatment of stress and
anxiety which are the basic causes.
Also note the foods and beverages that instigate or enhance the problems so that these can be stopped.
Change of lifestyle, vacation, only home-made foods helps further.