Lost Changes in SharePoint

I opened a file for editing by selecting the open in app option. Normally after making changes I simply close the Excel app and the check-in dialog appears where I can write my change log. In this case that didn't happen and the file just closed. I'm unable to locate this file now anywhere, as the one on Sharepoint is still the older version. Since I hit save several times during my changes can anyone tell me where that is stored? Is there any version buried on my computer that I might be able to locate? This was a lot of work that I'm now facing to be lost