Can I go to jail for not paying my support?

My ex has my kids, I am to pay 110 a week, and i have visatations. Back in Aprial/May I started not paying my child support. In september DOR took my licinse. In November they siezed my bank account which 1400.00 I have court thursday, what can i expect? Am i risking jail time? My ex, does she get a word can she ask that I am not put away?I believe I currently owe 2,600.00Im going to Brockton, Plymouth county if that helps.