How do I file for retroactive child support

Been dealing with a divorce for 10 months. My husband has not paid anything towards the well being of his daughter,, meanwhile I have had to accept government assistance until I got a job and since have been paying everything from full time day care, clothing, medical expenses and extra circular activites. I filed for child support as soon as I filed for divorce.

I have been borrowing money from my mother this whole time and need the retroactive child support to help repay some of the debt. Question is how do I go about filing and which forms do I need to file with clerk of the court? Obviously I am pro se...cannot afford a lawyer.. I also work so much just to barely break even,, so I also do not have the time to learn all the legalities with all of this...it is all so overwhelming! Any help would be extremely helpful. thank you very much