Lost content on Pages

I keep a journal going on Pages. Instead of continuing on the one page for all journal entries one day I for whatever reason started a new page, which i then had to title Journal I and Journal II. Today I copied and pasted all of Journal II on to Journal I but I lost ALL of Journal I in the process. It must be on my computer somewhere but I can't find it. I have an external hardrive and I went back a few days to grab Journal I there but it only had Journal II. Where is it??