Coding Project Disapeared

For the past month, I have been working on a coding project about living in the sky and getting certain resources from a single block when broken. I got on to my Chromebook to work on it but after I logged in to Minecraft Education Edition I couldn't find my project. I never published it, but for the past month or so I have been able to load back into it without needing to publish. I don't know what happened, but yesterday I logged into a school computer on Minecraft with my account and that might have had something to do with my issue. I have been working on this project for very long and have put a lot of effort into making it, so I'm really hoping that I can get it back. FYI, it's called "OneBlock - Dominic", please help me.