You are actually in a great place. If you own your home, take Rachel D's advice on possibly renting out your place. Most of the programs that help with mortgages involve you actually being in foreclosure. Also in these "tough" economic times, you have to be in trouble to get things your mortgage renegotiated. As long as you look like you can afford your home, even if that isn't the reality, you will be hard pressed to find help.
Most of the suggestions here are about cutting back or out. I love to encourage people to think about the things they can do to bring in additional income. What can you, your husband, and/or children do to bring in some extra money? If your children are in their teen years and like children, offering a babysitting service would be great or perhaps a lawn mowing service. What are some things you like to do? Baking (homemade breads, cakes, cookies, and pies goes a long way) especially with the holidays coming up.
You definitely want to check with your local churches. Many have food pantries that can help to supplement the food you buy on a regular basis.
A short sale and foreclosure have a negative impact on your credit but you are in great company because of this point in history this is happening to many people.
The first thing I would do is see what things we could do as a family to earn extra money, check out the local churches for their feeding programs, check into the rental market in your area and then come up with a plan that works for your entire family. It may be a mix of things.