If you're unemployed you can apply for Cash aid, get food stamps, etc. Google DCFS (department of child and family services). Good luck
The child support, you have to apply for it, then the father and you have to go to court. It could take several months before it's approved. Because it also depends if the father wants a dna test first. He has to show what he does for a living, you also, and the judge decides how much he pays based on occupation and income.
You should be able to go for food stamps and stuff. Just go to the department of family and children and they will help you get everything you qualify for.