@Eastmum Some hospitals discourage sheepskins or patients bring their own pillows. Hygiene issues, apparently. Also a problem if expensive personal items get bundled up with the laundry when someone strips your bed.
The sheepskins help stop pressure sores (which shouldn't be a problem for you) and are a lot more comfortable than laying on a sheet covering a plastic mattress.which makes you sweat. Awful.
If you are only in for a couple of days, beg for an extra blanket and get someone to fold it in half and put it under your bottom sheet, it makes life more comfortable. I do that anyway because the plastic creeps me out. Anything that works.