So I've been working away all morning on the environment for my scene.

I had saved and closed my work, had lunch, came back and haven't been able to open it up again.
I'm scared that the files become corrupt but I have no idea why that'd happen.
In the bottom left hand corner, it says Polygon reduce: reducing. I goes through this process endlessly and never opens the scene. Check image attached.
Can anyone help me please?

by the way... it has the loading icon as my cursor the entire time. when i go to task manager, it always says maya isn't responding.