Hello

i am currently in Remission from Burkitt Lymphoma (10 months post-treatment)

im 31 and have recently been having an issue with regular Diarrhea, every few days, usually following food or a carbonated drink. 
 

have no other symptoms of concern that I was advised to look out for - no swellings, weight loss, fatigue etc. so I called my regular GP (not my consultant - no point opening a can of worms in-necessarily) who advised me that it was likely I was suffering from a form of IBS.

any ideas On how best to treat this if it is IBS?