I know it is hard, but try to stop stressing over it.
This is what happened to me: I was moving and placed my quilt that my dear, dear grandmother made for me before she died in a large, black trash bag. After getting moved, I couldn't find it anywhere. I retraced ALL my steps from the days before. I cried, I hunted, and cried some more. Finally I resigned myself to the fact that it was gone forever. Then, what did I find: My precious quilt. Trust me never again has my qiult been put in a bag. If it is in the car for any reason, it rides in the front seat right next to me so it is never out of my sight.
I hope you find it soon. Hugs>>>