I lost my phone !! help !!?

well it happened on Friday 22,2010 on October. i was going to school on friday and i had my phone griped in my hand. then i went to the cafetaria(at school) where my friends have breakfast everyday. my freinds saw me put my phone in my bookbag.i DIDNT take my phone out all day! then, i went to english cl and i was looking for my phone. i didnt see it my bookbag. i started panicing and i was soo mad. my friend said to retrace my steps and i did. but it WASNT in all my cles. i didnt take it out all day long! soo i keep checking in my book bag , all it had in it was books,pencils and homework as always. and i dont know what to do. i keep praying and hopeing that ill find it. do you think i can find it??? it didnt get lost in math cl, or in social studies or in english cl or science etheir ! and its NOT in the cafetaria either. where did it posibly turn missing because i dnt think no one stole it and i dont think it fell outta my book bag because it was closed and i had my book the whole time. where do you think it went??? help ! oh and im 13.