Hi.
Thanks for your query.
Noted the history and understood the concerns.
Since you have pain and gases in abdomen for the past two days and wants information on supplements I would advise you the following as every individual can have different problems with different supplements or deficiencies.
Hence you have to identify the factors, foods and beverages that instigated or enhances the problems and stop these altogether. Also identify the things that suit you the most and thus help yourself.
Since there is excessive gas production and pain in abdomen the probable causes can be an intestinal infection or intolerance to something that you ate or drank within the last few days, identify these and do not repeat these.
Also send a sample of stool and blood for tests to get a probable cause so that it can be treated properly, for example if there is an intestinal infection a course of an antibiotic,
metronidazole can help to get a cure. Also take symptomatic treatment with an antispasmodic for pain, activated
charcoal and probiotics for gases, pancreatic enzyme supplements as needed or advised by your Doctors.