my song

I had just made a piano song which took me a long long time. I saved it to computer, and to musecore. And i cant find it anywhere, Im very frustrated that I had to show my mom my song which wasnt even their. It was called the Ballad of the scientist. Any help you can give me i will deeply appreiciate, Im not sure how to find it, maybe it just didn't save. But I saved it!