Hi Rosiewesti,
Your best bet is to just keep on providing food and water and keep it well away from anything that could cause it to feel stressed. It sounds like you've already done a great job of taking it out of harms way, so it'll no-doubt be very grateful for your help.
Other than that, just contact your local rescue centre - have a look in the
directory for your nearest one - to see if they can assess it's health and give you tips on the next course of action.
I hope everything goes OK
Good luck
Stuart