Edits lost

Hi. I am using Adobe Reader Touch, with which I have been analyzing a text for a university class. I have added plenty of these so called "sticky notes" to the side of the text, which contained crucial information and questions I figured out or have thought of during the reading. It was all fun and games, until ca. 10 minutes ago the program closed out of nowhere, and when I reopened it, my notes were gone. I have around 5-6 hours of work in this document and in these notes, so it would be a major inconvenience, if they were permanently gone. Can you please help me? I am desperate.