Floor problem

Last week-end I started a project I've been planning all summer. Refinishing our bedroom floor before our new bed arrives in a few weeks. I moved all the furniture out of our room. I started to pull up the carpet. The closet floor looked great. Then I encountered a huge problem ... a HUGE chunk of the hardwood floor has been removed and replaced with cement board. I felt tricked because I'd peaked in every corner and seen wood. Needless to say the project got a whole lot more complicated and more expensive and so isn't going to happen this month. I carefully and disappointedly put the carpet back down.