Medicaid help!!!

So my husband and I work full time jobs (me a teacher and he is a warehouse worker) as well as I work a part time job Wednesday evenings. Together we bring in about $50,000 but with bills, car note, etc it still seems like we are struggling to keep our heads above water let alone try to save. These $350 a month OBGYN bills are killings us( and yes that after my husband health insurance). That's also not including labs, ultrasounds, hospital charges, or any extra test.  So does anyone know anything about Medicaid state assistance or if we would even be eligible? We live in Arkansas and also have a 9 year with our next baby due in November.