Recently, my bowel movements began floating. what could this mean?

It could be from excessive intestinal gas, but if the floating stools are greasy&foul smelling,malabsorption of fats is the likely cause. In this case testing is performed to detect liver or other biliary tract disease, gall bladder, pancreatic pathology or celiac disease (gluten sensitivity). In these cases consultation with a gastroenterologist is needed for the best workup.