Child support

Kitana • Kitana🖤🌻

Idk how to go about this, my sons Dad and I aren’t together, he owes child support back from September, I went online and checked the balance that’s due and he owes 1,585 dollars. I have not been payed a penny. What am I allowed to do legally in the state of Oregon where we live. I’m just not getting by very well since I’m the only one who is financially helping our son. Any advice is welcomed