Constant digestive problems won't go away and have been getting worse over past 3 years. what could this be?

IBS/ChronicGastritis: It sounds like you need to see a GI doc. Constant digestive problems such as bloating, diarrhea, abdominal pain, cramps, constipation, or other issues require a visit to the family doctor. Labs to r/o h. Pylori infection, xrays ( an upper GI series) and a referral to the GI doctor may be needed. A condition call irritable bowel needs to be ruled out. Inflam. Bowel dzs also need to be checked.