My Iphone recently crashed and I'm having trouble with the restore.

My Iphone crashed Saturday night. Now it only shows the usb cord and itunes on the screen. I am trying to restore and having problems with this. My question is…When I do get it to restore will it be only factory settings that i have, also will I lose all my texts,notes, and calendar info since I haven’t backed it up recently? I am mainly concerned with the texts.