[Windows Central Question]

The other night, I was working a 3d model for my finals and I went downstairs to go to the toilet and when I got back, I saw my laptop updating to Windows 10. After hours of waiting, my work is gone so I'll do it again from the last time I saved it.
Then last night, I fell asleep while waiting for my 3d model to be rendered. This morning, I saw my laptop and Windows 10 updated again. Then I LOST ALL OF MY FINALS which are due TOMORROW and all of my school and personal documents. I checked the Local disk and I saw 201gb space free. Last night, I saw my free space's just 5gb.
help. im dying and im sick and i need to pass.