Losing what's left of my mind

I've been attempting to clear out my office this week. I had some stupid idea that seeing as I had this really nice office I should actually clear the crap out of it and start using it. In the course of my clearing I found two full manuscripts, both completed - in longhand - in my writing. I don't remember writing either of them!! I have no clue when I wrote them except I'm assuming they must have been done sometime after the eldest belle was born, before I had computer access.
They are both very 'Presents' in tone but I really cannot recall doing either of them. Does this mean I've gone completely bonkers?
Sadly, I don't think either of them are usable - the passage of time hasn't been kind to them and I hope my writing has improved since then. I'd love to find my first epic - a sci-fi sensual romance - which I think owed much to the fabulous Andre Norton.