If you forgot to save any of your recent Microsoft Office documents, you can recover it manually by going to the Manage Document option in the File menu.
For example, if you want to recover an unsaved Word document, go to File menu in the MS word:
File > Info > Manage Document >Recover Unsaved Documents
It will show a list of recent documents that were not saved.
You can do the same for Excel and PowerPoint by going to their respective File menus.
File > Info > Manage Workbook >Recover Unsaved Workbooks
File > Info > Manage Presentation >Recover Unsaved Presentations