You probably fall under FL child support laws since that's where the child and the custodial parent lives. But I'm no lawyer so you'll want to verify that with a lawyer.
Try using the following FL child support calculator to see where you stand:
http://www.alllaw.com/...
If you didn't pay anything for a year you could owe several thousands of dollars for which your feet could be put to the fire.
I hope you are keeping careful records and receipts for whatever money you've been sending.