Then relax, take a deep breath, and work with your entire family to formulate a plan for the possibility.
Find a safe place for everyone, make sure they know what you intend to do, and practice your response a few times.
A corporate plan, and a bit of common sense can go a long way to helping you get a good nights sleep. Possibly monitor in shifts, and if things get ugly outside, get everyone to a safe location, preferably a single room, arm yourselves, call 911, and keep your cool.
1) Tell 911 you have an intruder that is trying to enter your home. (do not lie, only tell them if they are trying to enter)
2) Tell them you are armed.
3) Tell them your exact location inside the house,( North west corner, Southeast corner etc.) and how many you are.
4)Someone stay on the line until police arrive and you are satisfied it is safe.
5) If you believe they have entered your home do not come out of your safe room until the 911 operator confirms that police have cleared your home.
6) When you are satisfied that the police are indeed the only people outside your door, secure your weapons before you go out, and make sure the 911 operator communicates this to the officers.
This is the best advice I can give, Godspeed my friend.