Premiere was freezing and in the process of trying to figure it out I (stupidly) hit Project -> Remove Unused. I had a bunch of clips and subclips that I had made that I haven't yet put in any sequence. Is there any way to undo this action or did I just remove all of my subclips and I'll have to start over again? Let me know if you have any ideas!
CTRL-Z may help, or otherwise revert to an auto-saved project.