Well it finally happened. After a couple of months of babying my new car that I got in November, it finally happened.
I was driving along behind an 18-wheeler because traffic was really bad, and the 18-wheeler kicked up a rock and it hit my windshield

It's a really tiny crack, about a 1/4 of the size of a dime, but just knowing it's there drives me crazy.
I called up the local auto-windshield repair places and they want to charge me $40-$50 to fill it in or whatever they do to prevent it from cracking more
Any suggestions on what I should do?