Version of InDesign? Operating system? It sounds like the file is toast. It must have been corrupted.
OS 10.11.3 Running InDesign 2015 CC
I have uninstalled and reinstalled InDesign through the Creative Cloud with no luck.
Please email your InDesign file to email@example.com and I will take a look at the document.
If the file is larger than 10 Mb, you can zip (and password protect) the file and upload to Creative Cloud account (or Dropbox) and send us the document link.
I ended up using a company called MARKZWARE and they were able to restore my file.