I accidentally uploaded without signing in. Where are my files?

Hi everyone, I'm new to Adobe.

I tried to convert an assignment from PDF to Word using Online Acrobat PDF-to-Word without realizing I wasn't signed in, and it says that my file was uploaded to Cloud. What does this mean? I can't find it anywhere (since it's not in my Cloud), and I think I'm just paranoid that my homework is now floating somewhere on the internet. Is there a way to find it on whichever Cloud it's on, and delete it? Thanks.