Paying child support

I’m so annoyed, I do everything for my child have my own place, pay rent,groceries, etc. I see my daughter. I am so upset because he is such a lame. Knowing I’m busting my butt off to survive to keep me on child support!!!! They are saying I owe when they take out money from my check every CHECK. I am so frustrated because I get everything for her and he gets everything for her. He cheated on me the whole pregnancy and is in school and he says he needs the money because he has to pay her insurance or birth bill??? We weren’t married thank Goodness..But she’s on my insurance,that I PAY FOR THROUGH MY JOB… and had at the time of birth, Medicaid covered it. Supposedly.

I’m not sure what he’s saying, but I am so frustrated. Am I tripping or what?