FAT MALABSORPTION?

I am currently on a low fat diet for a week due to my bowel movements being a bit "different." Different being full of grease.  Literally POOLS of it when I do go....sometimes no stools and JUST grease.  So weird! My doctors are worried about fat malabsorption.  If this low-fat diet doesn't do the trick, I'll be doing a 72 hour stool sample and may need to take a digestive enzyme or some other med. I'm currently trying to just figure my new life out with little to no extra meds or things to do. I guess we will see.....