Ok. Who has had their windshield replaced???

Was on my way to work the other day and when I pulled into the parking lot I noticed that i had a crack in my windshield. I didn't hear anything hit it and when I looked at the windshield there was a very tiny mark where something did hit it. The hit mark wasn't very big (about a 1/16 of an inch) but the crack was about four inches long. Called my insurance company and was given a number to call. They are replacing the windshield tomorrow. Seems like every time I get in the car the crack has grown. It is now a very nice "S" shape and about 9 inches long.