There are all kinds of windshield repair companies. Most will meet you during the day with their repair van at wherever you say you’ll be (usually in your parking lot at work, for example) and fix the thing within about 45 minutes (I had it done to my car in California in 2000).
And if you check with your insurance company it may very well be covered (if you have comprehensive coverage, I suppose, since this isn’t “collision” damage) because the alternative to the insurance company is replacement of the entire windshield if the crack exceeds the statutory length limit for your state. That’s a much more expensive fix.
Check google or your Yellow Pages for “windshield crack repair” and make an appointment right away. Those things will grow inches per day, and then you won’t have any more choice.