I Was Returned From Dominican 3 Days Ago. The Day

I was returned from Dominican 3 days ago. The day we left I started with loose stools in the morning . That seemed to pass then had some nausea on the plane again this embed to pass. The next morning I had stomach cramps and diarrhea began with severe stomach cramps. This lasted all day with yellow diarrhea . The next day I began to feel a bit better but still yellow stools and mild stomach cramps. This has continued now 3 days after our return. Am still eating bland foods (bananas crackers water pasta) but still seem to have cramps prior to bowel movement and though it's not still diarrhea the stools are quite loose and still yellow. I do have IBS and sensitive colon . Not sure if I should now see my Dr?