Why is my stool all of a sudden floating and now has for the past 4 days i'm a pretty healthy person and hardly eat junk food so why would it be floating? thanks!

Fatty feces: If you are eating a lot of fatty foods, the feces will float. This is also common in patients with gall bladder disease that cannot digest the extra intra-intestinal fat.

Floating stool: Some foods are not absorbed well. Malobsorption can be a reason for floating stools. Gas & fat in stools can cause them to float. I have enclose a link to an article that shares other reasons for floating stools & some foods that can be associated with this. See: https://www.healthline.com/health/stools-floating#causes