My Divorce was final 4 months ago. We filed an uncontested divorce. My ex was given every weekend with the kids and I got the weekdays. The kids are telling me he isnt nice to them (yelling at them alot nothing Physical) and he leaves them in the car for long periods of time when he visits his girlfriend. Do I now have a right to change his visitation? He is also trying to change things he agreed to in the divorce what are my rights?