I noticed you live in Indiana. I did a tiny bit of research and if you go to http://www.in.gov and click on family and health there are several links that will connect you to alot of different things. I saw links to WIC; child care assistance; TANF; and other agencies that can help point you in the right direction. I also found a number for the Indiana State Information/ Hotline Number: 1-800-622-4932. According to the website they should be able to help you apply for food stamps. Another website I found lists food banks for Indiana. It's http://www.secondharvest.org Also like the other mamas said I would talk to you township office. I also found this website helped me find resources http://www.govbenefits.gov/govbenefits_en.portal when I needed them. You can take a questionnaire and when you finish it will list different programs you could be eligible for.
The key is to stay on top of agencies you go to for help. If you don't pretty much get in their faces and keep pushing you won't get help. At least that is the way it is in Illinois.
Good luck and hang in there. It can be tough to be a single mom.