When I got into my car the other day I noticed that my window shield was cracked.what do I do?

So, my window has this small crack in it. I have no idea how it got there, because I'm certain that if this happened when I was driving I would have noticed it… It's as if someone threw a small pebble or rock at it. I do have insurance, but I'm worried because it's glass.I'm afraid there only response will be to install a brand new swindow. How much could this cost?
Added (1). Sorry, I have 2008 Ford Focus
Added (2). I guess I was somehow hoping that they would be able to repair it without replacing the entire window as foolish as that sounds

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