I feel ya badfish,
I too worry about pretty silly things. Like a book that I have borrowed from a friend, I'll be laying in bed and all the sudden I just get crazy anxiety about "what if I lost it?" "what if I accidently threw it away? "what if I took it to the library with my other library books?" You know, all the what if's. And it wouldn't be the end of the world but I still get very upset about it. I usually end up getting out of bed and searching for it. yeah, your not alone.
"There is hope for every man, a solid place where we can stand, in this dry in weary land, there is hope for every man... Jesus is hope for every man" -Casting Crowns