Yeah so I was driving down the freeway on my way to work a few days ago and a rather large pebble made its way to the base of my windsheild where it chipped the glass causing a crack about 6 crooked inches long. Since then, I've noticed that the crack has increased another 2 or 3 inches.

I can't "feel" the crack from the inside but I can barely feel it from the outside. As mentioned, the root is a tiny chip right at the base of the windshield. My question is, is there anything I need to do at this point? Like any kind of damage control? Is there some sort of sealant that can be applied? I just want to make sure this thing doesn't spread across the whole damn windshield as I don't have the funds right now to do a replacement.