I filed for an uncontested divorce. Now it's contested, but I'm broke..

First, don't panic. Contact legal aid in Nashville and see if they can help you. If not, check with the local law schools for law student intern assistance. If all else fails, represent yourself. See what your wife's attorney really wants. Advise him or her of the adultery. Try to work out a simple marital dissolution agreement and parenting agreement that works for the children and you. I am sure the other attorney will recognize the futility of fighting you if you truly have no money.